Edison vs Tesla: A Bedtime Story About the Men Who Gave Us Electricity​​​​​​​​​​​​​​​​

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Good evening and welcome back to
Sleep Wise.

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Tonight we drift into a story
about light.

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Not the light of stars or
sunrise, but the kind that human

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beings learn to summon from wire
and glass.

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The kind that hums quietly
inside the walls of nearly every

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room you have ever slept in.
It is a story about electricity

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and about two men who disagreed
so deeply over how it should

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reach the World that their
conflict became one of the

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strangest rivalries in the
history of invention.

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Their names were Thomas Edison
and Nikola Tesla.

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Edison is remembered as the
Great American inventor, the man

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who gave the world the
phonograph, the practical light

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bulb, and the first electrical
grid.

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Tesla is remembered as the
visionary, the man who imagined

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alternating current, wireless
transmission, and futures that

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even now have not fully arrived.
One became the pragmatist and

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the other the dreamer, and the
distance between those two words

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contains almost everything worth
knowing about.

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How new ideas enter the world.
But to night, we will hold both

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men gently.
Neither was simple.

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Edison was not merely A
businessman grinding through

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patents.
He was curious, tireless, and

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genuinely brilliant in his own
way.

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Tesla was not merely A
misunderstood genius floating

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above the earth.
He was proud, sometimes

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reckless, and capable of
mistakes that no amount of

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brilliance could undo.
Their story is richer than any

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version that turns 1 into a hero
and the other into a villain.

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Before we reach either of them,
let us begin where the story

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truly starts, a world without
electric light.

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It is difficult now to imagine
how dark that world was.

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We are so accustomed to light at
the Press of a switch that

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darkness has become almost
optional, something chosen for

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sleep or atmosphere.
But for most of human history,

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night was a serious matter.
When the sunset, the world

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dimmed in ways that shaped
everything.

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How people worked, how they
travelled, how they gathered and

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how they feared.
By the middle of the 19th

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century, cities had grown large
enough that darkness was an

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inconvenience on an industrial
scale.

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Gas lamps lined the wider
streets of London, Paris and New

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York, casting pale yellow glow
across cobblestones.

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They were an improvement over
candles and oil, but they were

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imperfect.
Gas was expensive.

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It smelled, it sometimes leaked,
and it occasionally exploded.

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The flame flickered.
The light was uneven and beyond

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the reach of the gas lines.
In smaller towns and rural

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homes, the old darkness still
held.

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Something better was needed, and
the century knew it.

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The question was not whether
electricity could produce light

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that had already been shown in
laboratories and public

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spectacles.
The question was whether it

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could be made safe, affordable,
and available to ordinary people

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in ordinary rooms.
That question would take decades

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to answer, and the answer would
not come from a single mind.

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It would come from a collision.
The hunger for better light did

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not appear suddenly.
It grew alongside the cities

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themselves, alongside factories
that ran longer hours and

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streets that filled with
strangers after dark.

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By the 1870's, the science of
electricity had matured enough

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that serious minds were turning
toward practical uses, but the

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gap between laboratory wonder
and household reality remained

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enormous.
The foundations had been laid

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decades earlier.
In the first half of the

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century, Michael Faraday had
shown that a changing magnetic

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field could produce an electric
current, a discovery so

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fundamental that nearly every
generator built since owes

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something to his quiet
experiments with coils and

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magnets.
Faraday was not an engineer or

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an industrialist.
He was a careful observer who

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trusted nature to reveal its
patterns, and the pattern he

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found became the heartbeat of
the electrical age.

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Before him, Humphrey Davy had
demonstrated the arc lamp, a

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device that produced a
brilliant, almost violent light

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by sending current across a gap
between 2 carbon rods.

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Arc lamps were dazzling, but
they were also harsh, loud, and

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far too bright for a parlor or a
bedroom.

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They found their way into
lighthouses and public squares,

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but they were not the answer for
ordinary rooms.

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The light they gave was
impressive in the way a bonfire

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is impressive, Powerful but
uncontrollable, too much for the

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intimate spaces where people
actually lived.

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Other inventors across Europe
and America tinkered with

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various approaches.
Some explored incandescent

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light, the idea that a filament
heated by current could glow

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steadily without burning away
too quickly.

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The principle was understood in
broad terms, but no one had yet

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found the right combination of
materials, vacuum and design to

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make it last.
Bulbs flickered and died.

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Filaments crumbled.
The air inside the glass

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conspired against the glowing
thread.

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Meanwhile, generators were
improving, Dynamos grew more

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reliable, more efficient and
more available.

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The raw material of electricity
was becoming easier to produce,

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but the question of what to do
with it at the other end of the

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wire remained stubbornly open.
Power without purpose is only

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noise, and electricity still
lack the practical devices that

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would make it worth delivering
to homes and offices.

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This was the world waiting for
someone bold enough to treat

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electricity not as a curiosity
but as a system.

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Not a spark to be admired in a
lecture hall, but a service to

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be sold, installed and trusted.
The science was ready.

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The engineering was close.
What was missing was a certain

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kind of ambition, the
willingness to imagine not just

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a device, but an entire network
of devices working together.

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That ambition was already
forming in a young man from Ohio

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who had taught himself
telegraphy, who had sold

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newspapers on trains, and who
had recently built a laboratory

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in the New Jersey countryside
that he called, without much

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modesty, the invention factory.
Thomas Alva Edison arrived in

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the public imagination like a
force of weather.

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By his late 20s, he had already
earned A reputation as a man who

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could solve problems that others
found impossible, and he did so

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with a combination of stamina,
shrewdness, and sheer volume of

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effort that few could match.
He was not, in the traditional

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sense, a scientist.
He had almost no formal

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education.
What he had instead was an

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extraordinary tolerance for
failure, an instinct for what

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the public would want, and a
workshop filled with skilled men

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who turned his rough ideas into
working devices.

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Edison did not sit alone in a
Garret waiting for inspiration.

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He organized invention the way a
factory owner organized

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production by dividing problems
into smaller pieces, assigning

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tasks, testing relentlessly, and
keeping careful records of what

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did not work so that the same
ground was never covered twice.

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Menlo Park, the laboratory he
established in 1876 in rural New

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Jersey, was something genuinely
new.

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It was not a university, not a
corporate office, not a garage.

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It was a place designed for the
sole purpose of producing

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inventions on demand.
Glass blowers, machinists,

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chemists and electricians worked
side by side.

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Supplies lined the shelves.
The goal was not to understand

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nature for its own sake, but to
make things that could be sold,

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patented, and delivered to a
waiting market.

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The phonograph came from this
place in 1877, and it made

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Edison famous almost overnight.
A machine that could record and

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reproduce the human voice seemed
almost supernatural to a world

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that had never heard its own
echo played back from a device.

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Edison became known as the
Wizard of Menlo Park, a title he

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enjoyed and cultivated.
He understood that invention was

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not only a technical act, but a
public one.

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The press loved him, and he
loved the press in return.

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His personality was complicated
in the way that very driven

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people often are.
He was generous with praise when

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it suited him and dismissive
when it did not.

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He could be warm, funny and
deeply curious in one

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conversation, and stubborn,
petty and territorial in the

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next.
He slept little, worked

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obsessively, and expected the
same from everyone around him.

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He was partially deaf, a
condition that seemed to sharpen

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his focus rather than diminish
it, as though the quieter world

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he inhabited allowed him to
concentrate more fiercely on the

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problems in front of him.
By the late 1870s, Edison turned

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his attention to electric light,
not because he was the first to

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imagine it, but because he
sensed that the moment had

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arrived when imagination could
become infrastructure.

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He did not want to build a
better candle.

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He wanted to replace gas
lighting entirely, and he

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intended to do it not with a
single invention, but with a

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system so complete that a
customer would need nothing

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else.
The race to build a practical

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incandescent light bulb is one
of the most celebrated chapters

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in the history of invention.
Though the word race is slightly

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misleading, Hedison was not the
only person working on the

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problem across the Atlantic.
Joseph Swan in England had been

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experimenting with carbon
filaments in evacuated glass

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bulbs for years, and others had
tried similar approaches in

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various forms.
What made Edison different was

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not the idea itself, but the
relentlessness with which he

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pursued it and the completeness
of the vision surrounding it.

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The central challenge was
deceptively simple.

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Pass an electric current through
a thin filament and it glows,

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but it also burns in open air.
The heat destroys the material

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almost instantly.
Place the filament inside a

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glass bulb and remove the air,
and the burning slows.

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But early vacuums were
imperfect, and early filaments

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were fragile.
The trick was to find a material

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that could endure, A substance
that would glow brightly without

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crumbling, blistering or
evaporating too quickly.

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Edison and his team tested
thousands of materials.

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The number has become part of
the legend, sometimes

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exaggerated, but the essential
truth holds.

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They tried platinum.
They tried various metals.

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They tried carbon in many forms.
They tested fibers from plants,

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threads, papers and splints of
bamboo.

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Each failure was logged, studied
and set aside.

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Edison reportedly said that he
had not failed.

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He had simply found many ways
that did not work.

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Whether or not he said it
exactly that way, the sentiment

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captures something real about
his method.

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Progress came not from flashes
of brilliance, but from

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systematic elimination.
In October of 1879, the

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breakthrough arrived.
A carbonized cotton thread

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filament placed inside a bulb
with a strong vacuum glowed

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steadily for more than 13 hours.
Later versions using carbonized

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bamboo lasted far longer.
The light was warm, soft and

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steady, nothing like the harsh
glare of an arc lamp.

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It was the kind of light a
person could read beside, eat

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beside, fall asleep beside.
Edison announced his success

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with characteristic showmanship.
He invited reporters and

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dignitaries to Menlo Park for a
public demonstration on New

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Year's Eve, and the laboratory
glowed with dozens of bulbs

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strung along the street and
inside the buildings.

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The effect was quietly
revolutionary.

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Here was not a spectacle of
blinding arcs or crackling

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sparks, but something gentler, a
glimpse of what ordinary

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evenings might feel like in a
world lit by electricity.

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Yet Edison understood something
that many of his competitors did

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not.
A light bulb by itself was only

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a beginning.
Without a way to generate

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electricity, deliver it through
wires, measure its use, and

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charge customers for it, the
bulb was a beautiful orphan.

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The real work was still ahead.
This is where Edison's mind

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showed its true character.
Many inventors would have

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stopped at the bulb and waited
for the world to figure out the

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rest.
Edison did not wait.

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He understood, perhaps more
clearly than anyone else alive,

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that electricity was not a
product but an ecosystem, and

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that every piece of that
ecosystem had to be designed,

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built, and coordinated before a
single customer would pay for

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the privilege of turning on a
light.

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He began with the generator.
His team designed Dynamos

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capable of producing steady,
direct current machines large

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enough to serve an entire
neighborhood from a single

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station.
Then came the wiring.

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Edison's engineers laid copper
cables beneath the streets,

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developing insulation methods
and junction systems that could

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carry current safely
underground.

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They designed switches, fuses,
safety cut offs and meters that

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could track how much electricity
each customer consumed.

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Because without metering, there
was no business model, and

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00:18:18,120 --> 00:18:22,760
without a business model there
was no industry.

233
00:18:23,120 --> 00:18:26,880
The scope of this thinking was
extraordinary.

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00:18:27,360 --> 00:18:31,080
Edison was not merely inventing
a device.

235
00:18:31,520 --> 00:18:36,640
He was inventing a utility.
He studied the gas lighting

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00:18:36,640 --> 00:18:41,280
industry carefully, not because
he admired it, but because he

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00:18:41,280 --> 00:18:45,040
intended to replace it.
And he knew that replacement

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00:18:45,040 --> 00:18:50,880
meant matching its convenience
while exceeding its quality.

239
00:18:51,640 --> 00:18:55,840
Gas had pipes, so electricity
would have wires.

240
00:18:56,360 --> 00:19:00,400
Gas had meters, so electricity
would have meters.

241
00:19:00,640 --> 00:19:05,240
Gas had central stations, so
electricity would have central

242
00:19:05,240 --> 00:19:08,720
stations.
The parallel was deliberate.

243
00:19:09,160 --> 00:19:15,320
On September 4th, 1882, Edison's
Pearl Street station in lower

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00:19:15,320 --> 00:19:20,600
Manhattan began operation.
It was the first central power

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00:19:20,600 --> 00:19:25,520
station in the United States
designed to deliver electricity

246
00:19:25,520 --> 00:19:30,560
to paying customers.
The area it served was small,

247
00:19:30,960 --> 00:19:35,080
roughly one square mile of the
financial district, and it

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00:19:35,080 --> 00:19:38,840
powered about 400 lamps in 85
buildings.

249
00:19:39,640 --> 00:19:42,440
By modern standards, the scale
was modest.

250
00:19:43,000 --> 00:19:46,280
By the standards of the day, it
was a revolution.

251
00:19:46,640 --> 00:19:49,000
The system ran on direct
current.

252
00:19:49,520 --> 00:19:52,920
Electricity flowed from the
generator, through the wires to

253
00:19:52,920 --> 00:19:59,040
the lamps and back again in a
single, steady direction, like

254
00:19:59,040 --> 00:20:04,120
water through a pipe.
Direct current was simple, well

255
00:20:04,120 --> 00:20:07,360
understood, and safe at low
voltages.

256
00:20:08,160 --> 00:20:12,920
Edison trusted it deeply.
He had built his empire around

257
00:20:12,920 --> 00:20:16,760
it, and he believed it was the
right foundation for the

258
00:20:16,760 --> 00:20:21,280
electrical future.
And for a brief, shining moment,

259
00:20:21,720 --> 00:20:24,520
it seemed as though he might be
right.

260
00:20:25,560 --> 00:20:28,480
The lights worked.
The customers paid.

261
00:20:29,000 --> 00:20:34,120
The press celebrated.
Edison had done something no one

262
00:20:34,120 --> 00:20:38,120
else had managed.
He had not merely demonstrated

263
00:20:38,320 --> 00:20:44,480
electric light, He had delivered
it reliably to a neighborhood in

264
00:20:44,480 --> 00:20:49,840
the largest city in the country.
The system was real, and it was

265
00:20:49,840 --> 00:20:53,240
growing.
But hidden inside that triumph

266
00:20:53,640 --> 00:20:58,760
was a problem that Edison either
underestimated or chose not to

267
00:20:58,760 --> 00:21:02,600
see.
Direct current could not travel

268
00:21:02,600 --> 00:21:05,720
very far.
The trouble with direct current

269
00:21:05,720 --> 00:21:08,800
was not philosophical, but
physical.

270
00:21:09,400 --> 00:21:14,400
Electricity moving through a
wire encounters resistance, and

271
00:21:14,400 --> 00:21:19,120
resistance turns useful energy
into wasted heat.

272
00:21:20,200 --> 00:21:23,360
The longer the wire, the greater
the loss.

273
00:21:23,720 --> 00:21:28,480
At the low voltages Edison used,
current could travel only about

274
00:21:28,480 --> 00:21:32,440
a mile from the generating
station before it weakened

275
00:21:32,440 --> 00:21:36,760
beyond usefulness.
Beyond that radius, the lights

276
00:21:36,760 --> 00:21:40,560
dimmed, flickered, and
eventually failed to work at

277
00:21:40,560 --> 00:21:43,240
all.
This meant that every

278
00:21:43,240 --> 00:21:45,960
neighborhood needed its own
power station.

279
00:21:46,680 --> 00:21:51,120
For a dense city block in lower
Manhattan, the model could

280
00:21:51,120 --> 00:21:56,480
function, But for a sprawling
city, let alone a town, a

281
00:21:56,480 --> 00:22:00,240
suburb, or the countryside, it
was impractical.

282
00:22:01,120 --> 00:22:05,080
Imagine building a new
coal-fired generating station

283
00:22:05,080 --> 00:22:10,880
every mile, each one requiring
fuel, operators, maintenance and

284
00:22:10,880 --> 00:22:14,400
land.
The cost would be staggering,

285
00:22:14,720 --> 00:22:18,720
the logistics impossible at any
real scale.

286
00:22:19,000 --> 00:22:23,000
Edison knew about this
limitation, but he believed it

287
00:22:23,000 --> 00:22:27,400
could be managed.
He experimented with thicker

288
00:22:27,400 --> 00:22:32,520
copper cables, which reduced
resistance but increased expense

289
00:22:32,680 --> 00:22:37,560
enormously.
He explored higher voltages

290
00:22:37,560 --> 00:22:41,600
within the direct current
framework, though this raised

291
00:22:41,600 --> 00:22:44,920
safety concerns he was reluctant
to accept.

292
00:22:45,720 --> 00:22:51,320
In his mind, the system he had
built was fundamentally sound.

293
00:22:51,840 --> 00:22:59,880
Nikola Tesla was born in 1856 in
the village of Smilian, in a

294
00:22:59,880 --> 00:23:03,320
mountainous region of the
Austrian Empire that is now part

295
00:23:03,320 --> 00:23:06,000
of Croatia.
His father was a Serbian

296
00:23:06,040 --> 00:23:10,280
Orthodox priest.
His mother, though uneducated in

297
00:23:10,280 --> 00:23:15,000
the formal sense, was remarkably
inventive in domestic life,

298
00:23:15,560 --> 00:23:20,080
building small tools and devices
for the household with her

299
00:23:20,080 --> 00:23:24,000
hands.
Tesla would later credit her

300
00:23:24,360 --> 00:23:28,840
with giving him the instinct for
mechanical imagination.

301
00:23:29,240 --> 00:23:34,200
From childhood, Tesla was
different in ways that were both

302
00:23:34,200 --> 00:23:41,160
extraordinary and unsettling.
He experienced vivid flashes of

303
00:23:41,160 --> 00:23:44,040
light that appeared before his
eyes without warning.

304
00:23:45,080 --> 00:23:49,320
He could visualize objects in
his mind with such precision

305
00:23:49,680 --> 00:23:53,640
that they seemed as real as the
physical world.

306
00:23:54,600 --> 00:23:58,760
Later in life, he described
being able to construct an

307
00:23:58,760 --> 00:24:04,360
entire machine, mentally rotate
it, examine it from every angle,

308
00:24:04,760 --> 00:24:08,280
and even run it in his
imagination to see where it

309
00:24:08,280 --> 00:24:14,480
might wear or fail, all before
drawing a single line on paper.

310
00:24:14,880 --> 00:24:20,240
This was not metaphor, it was
the way his mind worked, and it

311
00:24:20,240 --> 00:24:24,800
set him apart from nearly
everyone he would ever meet.

312
00:24:25,400 --> 00:24:30,360
Where Edison tested and tinkered
in the physical world, building

313
00:24:30,360 --> 00:24:34,680
device after device until
something functioned, Tesla

314
00:24:34,680 --> 00:24:37,480
designed in the theatre of his
own consciousness.

315
00:24:38,280 --> 00:24:42,280
He trusted the images in his
head with the same confidence

316
00:24:42,480 --> 00:24:45,560
that other engineers placed in
their workshops.

317
00:24:46,000 --> 00:24:50,000
He studied engineering at the
Technical University in Graz,

318
00:24:50,000 --> 00:24:53,680
Austria, where he first
encountered a direct current

319
00:24:53,680 --> 00:25:00,000
motor called a Gram Dynamo.
The machine worked, but it used

320
00:25:00,000 --> 00:25:03,560
devices called commutators to
maintain the current's

321
00:25:03,560 --> 00:25:07,680
direction, and these produced
visible sparking.

322
00:25:08,240 --> 00:25:13,840
Tesla found this inelegant.
A professor told him that

323
00:25:13,840 --> 00:25:18,640
eliminating the commutator was
essentially impossible.

324
00:25:19,480 --> 00:25:24,560
Tesla disagreed quietly and
carried the problem with him

325
00:25:25,120 --> 00:25:27,840
like a seed waiting for the
right season.

326
00:25:28,240 --> 00:25:33,560
The answer came to him in 1882,
while walking in a park in

327
00:25:33,560 --> 00:25:37,960
Budapest.
By his own account, the idea

328
00:25:37,960 --> 00:25:41,720
appeared whole.
He saw in his mind a rotating

329
00:25:41,720 --> 00:25:46,040
magnetic field, a field that
could spin without mechanical

330
00:25:46,040 --> 00:25:50,880
switching, generated by currents
that alternated in carefully

331
00:25:50,880 --> 00:25:54,960
timed phases.
A motor built on this principle

332
00:25:55,200 --> 00:26:00,400
would not need commutators,
would not spark, and could run

333
00:26:00,400 --> 00:26:05,640
with a smoothness and efficiency
that direct current motors could

334
00:26:05,640 --> 00:26:09,440
not easily match.
He reportedly sketched the

335
00:26:09,440 --> 00:26:14,480
design in the dirt with a stick.
Whether that detail is perfectly

336
00:26:14,480 --> 00:26:20,200
true or slightly polished by
memory, the core of the story is

337
00:26:20,200 --> 00:26:23,520
sound.
Tesla had conceived the

338
00:26:23,520 --> 00:26:28,080
polyphase alternating current
motor, and with it the

339
00:26:28,080 --> 00:26:32,720
foundation of a system that
could generate, transmit, and

340
00:26:32,720 --> 00:26:36,960
use electrical power in an
entirely different way from

341
00:26:36,960 --> 00:26:40,680
anything Edison had imagined.
He did not yet have the

342
00:26:40,680 --> 00:26:44,520
resources to build it.
He did not yet have a patron or

343
00:26:44,520 --> 00:26:47,680
a laboratory.
But the architecture was

344
00:26:47,680 --> 00:26:52,760
complete in his mind, and he
carried it westward across the

345
00:26:52,760 --> 00:26:57,360
ocean toward the country where
the electrical future was being

346
00:26:57,360 --> 00:27:00,600
written.
Tesla arrived in New York in

347
00:27:00,600 --> 00:27:05,920
June of 1884 with very little
money, a few personal

348
00:27:05,920 --> 00:27:11,400
belongings, and a letter of
introduction addressed to Thomas

349
00:27:11,400 --> 00:27:14,520
Edison.
The letter was reportedly

350
00:27:14,520 --> 00:27:18,600
written by Charles Bachelor, one
of Edison's associates in

351
00:27:18,600 --> 00:27:21,760
Europe.
And according to legend, it said

352
00:27:21,760 --> 00:27:27,520
something to the effect of I
know 2 great men, and you are

353
00:27:27,520 --> 00:27:31,960
one of them.
The other is this young man.

354
00:27:32,600 --> 00:27:37,480
Whether those exact words were
written is uncertain, but the

355
00:27:37,480 --> 00:27:40,400
spirit of the recommendation was
clear.

356
00:27:41,280 --> 00:27:44,720
Tesla was considered
exceptional.

357
00:27:45,080 --> 00:27:48,520
Edison hired him.
The two men worked in the same

358
00:27:48,520 --> 00:27:52,720
orbit for several months, and
the contrast between them was

359
00:27:52,720 --> 00:27:56,920
immediate.
Edison was empirical, hands on,

360
00:27:56,920 --> 00:28:01,080
impatient with theory.
He trusted trial and error.

361
00:28:01,840 --> 00:28:05,880
Tesla was theoretical, precise,
and elegant.

362
00:28:06,440 --> 00:28:09,920
He trusted mathematics and
mental models.

363
00:28:11,000 --> 00:28:15,320
Edison worked through the night
on instinct and coffee.

364
00:28:16,320 --> 00:28:21,600
Tesla worked through the night
on vision and obsessive internal

365
00:28:21,600 --> 00:28:25,440
clarity.
They respected each other's

366
00:28:25,440 --> 00:28:29,920
abilities, at least at first,
but the fit was poor.

367
00:28:30,280 --> 00:28:35,360
The breaking point, as Tesla
later told the story, involved a

368
00:28:35,440 --> 00:28:39,480
promise.
Edison had allegedly offered

369
00:28:39,480 --> 00:28:46,760
Tesla a large sum, sometimes
quoted as $50,000, if he could

370
00:28:46,760 --> 00:28:50,080
improve the efficiency of
Edison's Dynamos.

371
00:28:50,960 --> 00:28:54,600
Tesla worked for months and
deliver the improvements.

372
00:28:55,160 --> 00:28:59,200
When he asked for the payment,
Edison reportedly laughed and

373
00:28:59,200 --> 00:29:04,640
said the offer had been a joke,
that Tesla did not yet

374
00:29:04,640 --> 00:29:09,720
understand American humor.
The truth of this exchange is

375
00:29:09,720 --> 00:29:12,720
debated.
Edison's supporters have

376
00:29:12,720 --> 00:29:16,760
questioned whether such a clear
cut promise was ever made.

377
00:29:17,360 --> 00:29:20,880
Tesla's supporters have taken
the story at face value.

378
00:29:21,600 --> 00:29:25,000
What is not debated is the
outcome.

379
00:29:25,880 --> 00:29:31,560
Tesla left Edison's company in
1885 feeling cheated and

380
00:29:31,560 --> 00:29:36,120
disillusioned.
The parting was not violent, but

381
00:29:36,120 --> 00:29:40,320
it was bitter, and it left a
mark that neither man would

382
00:29:40,320 --> 00:29:44,120
fully forget.
What followed was a period of

383
00:29:44,120 --> 00:29:48,680
genuine hardship.
Tesla formed a small company,

384
00:29:49,200 --> 00:29:53,360
but his backers were interested
in arc lighting, not in the

385
00:29:53,360 --> 00:29:56,320
alternating current system he
wanted to build.

386
00:29:57,200 --> 00:30:01,560
When the venture dissolved, he
found himself broke and

387
00:30:01,600 --> 00:30:06,680
overqualified, a man with one of
the most powerful ideas in

388
00:30:06,680 --> 00:30:11,440
electrical engineering, digging
ditches in New York for $2.00 a

389
00:30:11,440 --> 00:30:15,840
day to survive.
It was a humbling season.

390
00:30:16,320 --> 00:30:20,800
The man who could design a motor
in his mind and see it turning

391
00:30:20,800 --> 00:30:25,760
with perfect clarity was
swinging a shovel in the winter

392
00:30:25,760 --> 00:30:31,280
cold, unable to find anyone
willing to listen to his ideas

393
00:30:31,640 --> 00:30:37,720
about alternating current.
Edison, meanwhile, was expanding

394
00:30:37,720 --> 00:30:43,760
his direct current empire,
opening new stations, wiring new

395
00:30:43,760 --> 00:30:49,160
neighborhoods, and consolidating
his position as the most

396
00:30:49,160 --> 00:30:53,840
important figure in the American
electrical industry.

397
00:30:54,160 --> 00:30:59,360
The distance between them in
1886 was not merely

398
00:30:59,360 --> 00:31:03,200
professional.
It was the distance between a

399
00:31:03,200 --> 00:31:08,480
man whose system was already
built and a man whose system

400
00:31:08,480 --> 00:31:15,600
existed only in imagination.
That distance would not last.

401
00:31:16,040 --> 00:31:20,880
The turn came through George
Westinghouse, a man whose name

402
00:31:20,880 --> 00:31:26,440
does not carry the same romantic
weight as Edison's or Tesla's,

403
00:31:27,040 --> 00:31:31,240
but whose role in the story was
indispensable.

404
00:31:31,520 --> 00:31:34,760
Westinghouse was an
industrialist and inventor in

405
00:31:34,760 --> 00:31:38,880
his own right, best known for
developing the air brake for

406
00:31:38,880 --> 00:31:43,840
railroads, a device that had
saved countless lives by

407
00:31:43,840 --> 00:31:48,720
allowing trains to stop safely
and reliably.

408
00:31:49,640 --> 00:31:55,840
He was practical, wealthy, and
unafraid of large systems.

409
00:31:56,160 --> 00:32:00,400
Westinghouse had been watching
the electrical industry with

410
00:32:00,400 --> 00:32:04,640
growing interest.
He understood the limitations of

411
00:32:04,640 --> 00:32:08,080
direct current.
He had already begun

412
00:32:08,080 --> 00:32:12,880
experimenting with alternating
current technology after

413
00:32:12,880 --> 00:32:19,560
encountering European work on
Transformers, devices that could

414
00:32:19,560 --> 00:32:23,520
change AC voltage with
remarkable efficiency.

415
00:32:24,320 --> 00:32:30,440
What he lacked was a complete
system and specifically a

416
00:32:30,440 --> 00:32:35,200
workable AC motor.
When he learned of Tesla's

417
00:32:35,200 --> 00:32:40,120
patents, he recognized their
significance almost immediately.

418
00:32:40,440 --> 00:32:45,240
In 1888, Westinghouse invited
Tesla to Pittsburgh.

419
00:32:45,760 --> 00:32:50,840
The meeting was consequential.
Westinghouse offered to license

420
00:32:50,840 --> 00:32:55,200
Tesla's alternating current
patents for a substantial sum,

421
00:32:55,640 --> 00:33:02,240
reportedly $60,000 plus
royalties of $2.50 per

422
00:33:02,240 --> 00:33:05,520
horsepower of AC electricity
sold.

423
00:33:06,240 --> 00:33:11,120
It was an extraordinary deal,
one that recognized not just the

424
00:33:11,120 --> 00:33:15,960
quality of Tesla's inventions,
but their potential scale.

425
00:33:16,800 --> 00:33:21,040
If alternating current became
the standard, those royalties

426
00:33:21,040 --> 00:33:24,840
could amount to a fortune.
Tesla accepted.

427
00:33:25,480 --> 00:33:29,680
He moved to Pittsburgh and
worked alongside Westinghouse's

428
00:33:29,680 --> 00:33:35,080
engineers to adapt his polyphase
system for practical use.

429
00:33:36,000 --> 00:33:39,400
The collaboration was not always
smooth.

430
00:33:40,480 --> 00:33:43,920
Tesla's motor designs were
elegant in theory.

431
00:33:44,400 --> 00:33:48,320
But to understand why the war
mattered, it helps to pause and

432
00:33:48,320 --> 00:33:53,160
consider calmly what makes
alternating current different

433
00:33:53,160 --> 00:33:56,880
from direct current.
The distinction is not

434
00:33:56,880 --> 00:34:02,080
difficult, and once it settles
in the mind, the entire conflict

435
00:34:02,080 --> 00:34:05,800
becomes clearer.
Direct current flows in One

436
00:34:05,800 --> 00:34:09,159
Direction.
Imagine a river that moves

437
00:34:09,159 --> 00:34:12,600
steadily from source to mouth,
never reversing.

438
00:34:13,120 --> 00:34:17,480
The electrons move through the
wire in a single continuous

439
00:34:17,480 --> 00:34:21,960
stream.
It is simple, intuitive, and

440
00:34:22,280 --> 00:34:27,440
easy to understand.
Edison loved it For these

441
00:34:27,440 --> 00:34:30,719
reasons.
A battery produces direct

442
00:34:30,719 --> 00:34:34,120
current.
His early generators produced

443
00:34:34,320 --> 00:34:39,480
direct current.
His entire system was designed

444
00:34:39,480 --> 00:34:44,400
around this one way flow.
Alternating current behaves

445
00:34:44,400 --> 00:34:47,880
differently.
Instead of flowing in a single

446
00:34:47,880 --> 00:34:52,520
direction, the current reverses
itself many times per second,

447
00:34:53,120 --> 00:34:58,760
pushing forward and then pulling
back in a smooth rhythmic wave.

448
00:34:59,760 --> 00:35:04,200
The electrons do not travel far
in any One Direction.

449
00:35:04,720 --> 00:35:09,400
They oscillate, trembling back
and forth in the wire like the

450
00:35:09,400 --> 00:35:14,160
vibration of a plucked string.
This sounds less efficient at

451
00:35:14,160 --> 00:35:19,600
first hearing, almost wasteful.
Why push and pull when you could

452
00:35:19,600 --> 00:35:24,120
simply push?
But the oscillation is precisely

453
00:35:24,120 --> 00:35:27,560
what gives alternating current
its great advantage.

454
00:35:28,480 --> 00:35:33,960
Because AC changes direction
rhythmically, it can be fed

455
00:35:33,960 --> 00:35:38,800
through a transformer, a
remarkably simple device made of

456
00:35:39,120 --> 00:35:43,600
two coils of wire wrapped around
a shared iron core.

457
00:35:44,360 --> 00:35:48,720
When alternating current flows
through 1 coil, it creates a

458
00:35:48,720 --> 00:35:54,440
changing magnetic field and that
field induces a current Indiana

459
00:35:54,440 --> 00:35:58,320
the second coil.
By varying the number of turns

460
00:35:58,320 --> 00:36:03,200
in each coil, the voltage can be
stepped up or stepped down with

461
00:36:03,200 --> 00:36:07,920
very little energy lost.
This was the key To send

462
00:36:07,920 --> 00:36:12,400
electricity over long distances
without crippling losses, you

463
00:36:12,400 --> 00:36:16,120
need high voltage.
High voltage pushes the same

464
00:36:16,120 --> 00:36:20,040
power through thinner wires with
far less resistance.

465
00:36:20,720 --> 00:36:24,520
But high voltage is dangerous in
a home.

466
00:36:25,120 --> 00:36:29,480
The transformer solved both
problems at once.

467
00:36:30,040 --> 00:36:35,320
Generate electricity at a
moderate voltage, step it up for

468
00:36:35,320 --> 00:36:39,720
the journey across miles of
wire, then step it back down to

469
00:36:39,720 --> 00:36:43,960
safe levels near the customer
direct current Indiana.

470
00:36:43,960 --> 00:36:46,640
The 1880s had no equivalent
trick.

471
00:36:47,120 --> 00:36:50,200
There was number simple way to
change its voltage.

472
00:36:50,880 --> 00:36:55,160
What you generated was
essentially what you delivered.

473
00:36:56,160 --> 00:37:00,600
Edison's system remained trapped
within its small radius,

474
00:37:01,160 --> 00:37:05,480
Powerful but local, brilliant
but limited.

475
00:37:05,880 --> 00:37:11,480
Tesla's polyphase AC system
added another layer of elegance.

476
00:37:12,200 --> 00:37:16,880
By using multiple alternating
currents slightly out of phase

477
00:37:16,880 --> 00:37:21,880
with one another, he could
create a rotating magnetic field

478
00:37:21,880 --> 00:37:25,200
that drove motors smoothly and
powerfully.

479
00:37:26,400 --> 00:37:29,640
AC was not merely better for
transmission, it was the

480
00:37:29,640 --> 00:37:33,560
foundation of a new kind of
electric motor that would

481
00:37:33,560 --> 00:37:38,360
eventually power factories and
appliances across the world.

482
00:37:38,720 --> 00:37:43,000
The physics was settled.
The engineering was ready.

483
00:37:43,720 --> 00:37:49,400
What remained was persuasion,
and persuasion, as Edison was

484
00:37:49,400 --> 00:37:54,200
about to show, does not always
follow the quietest path.

485
00:37:54,520 --> 00:37:59,160
Edison's campaign against
alternating current began not

486
00:37:59,160 --> 00:38:04,280
with reason but with fear.
He understood, perhaps

487
00:38:04,280 --> 00:38:08,680
instinctively, that if the
public debate remained purely

488
00:38:08,680 --> 00:38:14,560
technical, he would lose.
The physics favored AC, the

489
00:38:14,600 --> 00:38:19,600
economics favored AC.
The only ground on which direct

490
00:38:19,680 --> 00:38:24,920
current could still compete was
safety, and Edison intended to

491
00:38:24,920 --> 00:38:29,080
make that ground as vivid and
disturbing as possible.

492
00:38:29,440 --> 00:38:33,080
He began by funding public
demonstrations designed to

493
00:38:33,080 --> 00:38:40,640
associate alternating current
with death in 1887 and 1888.

494
00:38:41,040 --> 00:38:46,320
Harold Brown, an engineer with
ties to Edison Circle, conducted

495
00:38:46,320 --> 00:38:51,160
experiments in which animals
were killed using alternating

496
00:38:51,160 --> 00:38:55,120
current before audiences of
reporters and officials.

497
00:38:55,560 --> 00:39:00,240
Dogs, calves and eventually a
horse were subjected to lethal

498
00:39:00,240 --> 00:39:05,840
doses of AC electricity.
The purpose was not scientific.

499
00:39:06,320 --> 00:39:11,200
It was theatrical.
Each death was meant to plant

500
00:39:11,200 --> 00:39:17,120
the same message in the public
mind, alternating current kills.

501
00:39:17,480 --> 00:39:21,640
Edison lent his laboratories,
his equipment, and his

502
00:39:21,640 --> 00:39:26,080
reputation to these efforts,
though he was careful to keep a

503
00:39:26,080 --> 00:39:30,080
degree of public distance from
the ugliest details.

504
00:39:30,680 --> 00:39:35,720
He wrote letters, gave
interviews and publish pamphlets

505
00:39:35,720 --> 00:39:39,680
warning of the dangers of high
voltage AC systems.

506
00:39:40,680 --> 00:39:46,040
He referred to electrocution by
alternating current as being

507
00:39:46,040 --> 00:39:51,400
Westinghouse, A deliberate
attempt to tie the name of his

508
00:39:51,400 --> 00:39:55,160
competitor to the image of
violent death.

509
00:39:55,600 --> 00:40:00,120
The campaign reached its most
notorious chapter with the

510
00:40:00,120 --> 00:40:04,200
electric chair.
New York State was searching for

511
00:40:04,200 --> 00:40:08,600
a more humane method of
execution than hanging, and

512
00:40:08,600 --> 00:40:13,520
Edison's allies worked to ensure
that the device chosen would run

513
00:40:13,520 --> 00:40:19,320
on alternating current if the
state itself used AC to kill

514
00:40:19,320 --> 00:40:22,840
condemned prisoners.
The association between

515
00:40:22,840 --> 00:40:27,920
Westinghouse's system and
lethality would be sealed in the

516
00:40:27,920 --> 00:40:32,400
public imagination.
The first execution by electric

517
00:40:32,400 --> 00:40:39,000
chair took place in August of
1890 at Auburn Prison in New

518
00:40:39,000 --> 00:40:42,840
York.
It was, by nearly all accounts,

519
00:40:43,320 --> 00:40:47,120
a grim affair.
The procedure was botched,

520
00:40:47,240 --> 00:40:51,480
requiring multiple applications
of current, and witnesses

521
00:40:51,720 --> 00:40:57,080
described the scene as far worse
than the hanging it was meant to

522
00:40:57,080 --> 00:41:01,400
replace.
Westinghouse reportedly remarked

523
00:41:01,560 --> 00:41:04,480
that they would have done better
with an axe.

524
00:41:04,760 --> 00:41:07,960
The episode did not achieve what
Edison had hoped.

525
00:41:08,560 --> 00:41:13,040
Rather than turning the public
decisively against AC, the

526
00:41:13,040 --> 00:41:18,480
botched execution generated
sympathy for the condemned man

527
00:41:18,480 --> 00:41:22,080
and criticism of the entire
enterprise.

528
00:41:22,680 --> 00:41:27,080
The ugliness of the event
reflected poorly not on

529
00:41:27,080 --> 00:41:31,280
alternating current, but on the
men who had manipulated the

530
00:41:31,280 --> 00:41:34,120
process for commercial
advantage.

531
00:41:34,480 --> 00:41:40,600
Still, the campaign left scars.
It introduced a note of genuine

532
00:41:40,600 --> 00:41:44,960
public anxiety about high
voltage electricity that would

533
00:41:44,960 --> 00:41:48,680
linger for years.
And it revealed something

534
00:41:48,680 --> 00:41:53,600
uncomfortable about Edison
himself, that his brilliance as

535
00:41:53,600 --> 00:42:00,240
an inventor did not protect him
from pettiness, desperation, or

536
00:42:00,240 --> 00:42:03,480
the willingness to use suffering
as a marketing tool.

537
00:42:03,760 --> 00:42:09,360
It would be easy at this point
in the story to cast Edison as

538
00:42:09,360 --> 00:42:14,320
the villain and move on.
But the truth is more tangled

539
00:42:14,320 --> 00:42:18,200
than that, and the tangle is
worth sitting with for a moment

540
00:42:18,520 --> 00:42:23,840
because it touches something
real about how even remarkable

541
00:42:23,840 --> 00:42:28,200
people behave when they feel the
world shifting beneath them.

542
00:42:28,520 --> 00:42:32,280
Edison was not wrong that
alternating current at high

543
00:42:32,280 --> 00:42:37,640
voltages was dangerous.
It was high voltage AC lines

544
00:42:37,640 --> 00:42:42,840
could and did kill workers and
bystanders who came into contact

545
00:42:42,840 --> 00:42:46,280
with them.
The early infrastructure was

546
00:42:46,280 --> 00:42:50,080
imperfect.
Wires were sometimes poorly

547
00:42:50,080 --> 00:42:55,800
insulated, poles were sometimes
badly maintained, and accidents

548
00:42:55,800 --> 00:43:00,600
were not uncommon.
Edison's concern for safety was

549
00:43:00,600 --> 00:43:04,960
not entirely manufactured.
He had built his direct current

550
00:43:04,960 --> 00:43:10,760
system at low voltages partly
because he believed, with some

551
00:43:10,760 --> 00:43:15,480
justification, that lower
voltages were less likely to

552
00:43:15,480 --> 00:43:19,680
harm people.
Where he crossed the line was in

553
00:43:19,680 --> 00:43:23,480
the method.
Instead of advocating for better

554
00:43:23,480 --> 00:43:27,720
safety standards and better
engineering, which would have

555
00:43:27,720 --> 00:43:32,000
served the public well, he chose
spectacle.

556
00:43:32,440 --> 00:43:36,880
He chose fear.
He chose to kill animals on

557
00:43:36,880 --> 00:43:41,680
stages and attach his rival's
name to an instrument of

558
00:43:41,680 --> 00:43:45,880
execution.
The strategy was not born from

559
00:43:45,880 --> 00:43:50,960
pure cynicism, but it was not
born from pure principle either.

560
00:43:51,280 --> 00:43:56,320
It lived in the uncomfortable
space between genuine belief and

561
00:43:56,320 --> 00:44:01,360
commercial desperation.
Tesla and Westinghouse responded

562
00:44:01,360 --> 00:44:06,080
with relative restraint.
Westinghouse published counter

563
00:44:06,080 --> 00:44:10,040
arguments and pointed to the
growing safety record of

564
00:44:10,040 --> 00:44:16,360
properly installed AC systems.
Tesla, who was not naturally

565
00:44:16,360 --> 00:44:20,800
drawn to public battles, focused
on his work and let the

566
00:44:20,800 --> 00:44:25,200
technology speak for itself.
Neither man launched A

567
00:44:25,200 --> 00:44:29,160
comparable campaign of fear
against direct current.

568
00:44:30,040 --> 00:44:33,640
This restraint was not always
strategic.

569
00:44:34,560 --> 00:44:39,200
Tesla was simply more interested
in invention than in warfare.

570
00:44:39,800 --> 00:44:43,920
But the contrast in conduct
remained striking.

571
00:44:44,360 --> 00:44:49,520
There is a quieter lesson here.
When a person has built

572
00:44:49,520 --> 00:44:55,280
something real, something that
works, and then watches a better

573
00:44:55,280 --> 00:45:00,160
alternative rise to challenge
it, the response reveals

574
00:45:00,160 --> 00:45:04,200
character.
Edison could have acknowledged

575
00:45:04,200 --> 00:45:09,520
the strengths of AC, pivoted his
enormous resources toward new

576
00:45:09,520 --> 00:45:14,080
problems, or worked to
incorporate Transformers into a

577
00:45:14,080 --> 00:45:17,960
hybrid system.
Instead, he dug in.

578
00:45:18,520 --> 00:45:21,640
He fought the future with the
tools of the past.

579
00:45:22,000 --> 00:45:27,320
And in doing so, he diminished a
legacy that might otherwise have

580
00:45:27,320 --> 00:45:31,240
been unambiguous.
It is not that Edison was a

581
00:45:31,240 --> 00:45:36,200
lesser man than Tesla.
In many practical respects, he

582
00:45:36,200 --> 00:45:40,200
was a greater 1.
He delivered systems, built

583
00:45:40,320 --> 00:45:46,160
industries, employed thousands,
and changed daily life in ways

584
00:45:46,160 --> 00:45:50,880
Tesla never managed.
But in this chapter, his

585
00:45:50,880 --> 00:45:55,120
greatness was shadowed by
something smaller, a refusal to

586
00:45:55,120 --> 00:45:59,680
let go of what he had already
made in order to see what might

587
00:45:59,680 --> 00:46:03,400
come next.
The war continued, but the

588
00:46:03,480 --> 00:46:08,360
outcome was beginning to take
shape, and it would announce

589
00:46:08,360 --> 00:46:13,480
itself not with pamphlets or
demonstrations, but with light

590
00:46:13,520 --> 00:46:20,760
on a scale no one had ever seen.
In 1893, the city of Chicago

591
00:46:21,000 --> 00:46:25,880
hosted the World's Colombian
Exposition, a grand fair

592
00:46:25,880 --> 00:46:29,280
celebrating the 400th
anniversary of Columbus's

593
00:46:29,280 --> 00:46:34,160
arrival in the Americas.
It was designed to showcase the

594
00:46:34,160 --> 00:46:39,920
best of modern civilization, and
the organizers wanted it to be

595
00:46:39,920 --> 00:46:43,840
spectacular.
Among the many contracts up,

596
00:46:43,840 --> 00:46:47,680
Forbid 1 stood out above the
rest.

597
00:46:48,440 --> 00:46:53,240
The fare needed to be lit, and
it needed to be lit on a scale

598
00:46:53,240 --> 00:46:57,640
that would astonish the world.
Edison's General Electric

599
00:46:57,640 --> 00:47:02,720
Company submitted a bid to
illuminate the exposition using

600
00:47:02,720 --> 00:47:07,680
direct current.
Westinghouse, backed by Tesla's

601
00:47:07,680 --> 00:47:12,360
alternating current system,
submitted A competing bid.

602
00:47:13,400 --> 00:47:16,680
The difference in cost was
decisive.

603
00:47:17,440 --> 00:47:21,520
Westinghouse offered to do the
job for roughly half the price

604
00:47:21,520 --> 00:47:26,240
General Electric had proposed.
The fair's organizers chose

605
00:47:26,440 --> 00:47:30,520
Westinghouse.
It was a pivotal moment, not

606
00:47:30,520 --> 00:47:34,760
because alternating current had
never been used before, but

607
00:47:34,760 --> 00:47:40,480
because the exposition would be
the largest and most visible

608
00:47:40,480 --> 00:47:45,400
demonstration of electrical
power the world had ever seen.

609
00:47:46,400 --> 00:47:51,480
More than 27 million people
would visit the fair over its

610
00:47:51,480 --> 00:47:56,040
six month run.
Whatever system lit the grounds

611
00:47:56,040 --> 00:48:00,640
would be seen, discussed, and
remembered by an entire

612
00:48:00,640 --> 00:48:04,120
generation.
Tesla and Westinghouse

613
00:48:04,440 --> 00:48:08,160
delivered.
The fair opened on the evening

614
00:48:08,160 --> 00:48:12,720
of May 1st, and when President
Grover Cleveland pressed a

615
00:48:12,720 --> 00:48:18,920
golden Telegraph key to signal
the start, roughly 100,000

616
00:48:18,920 --> 00:48:22,080
incandescent lamps came to life
at once.

617
00:48:22,960 --> 00:48:27,400
The effect was breathtaking.
Buildings glowed wide against

618
00:48:27,400 --> 00:48:31,440
the night sky.
Fountains shimmered, Walkways

619
00:48:31,440 --> 00:48:34,160
sparkled.
Visitors who had never seen

620
00:48:34,160 --> 00:48:38,240
electric light in their own
homes stood surrounded by it on

621
00:48:38,240 --> 00:48:42,960
every side, soft and steady and
seemingly endless.

622
00:48:43,360 --> 00:48:46,040
The press called it the White
City.

623
00:48:46,760 --> 00:48:51,400
Photographs from the fair show a
landscape that looks almost

624
00:48:51,400 --> 00:48:55,400
dreamlike.
Classical architecture bathed in

625
00:48:55,400 --> 00:49:00,960
electric light, reflecting pools
turned to mirrors, crowds moving

626
00:49:00,960 --> 00:49:04,560
through a world that felt like a
glimpse of the future.

627
00:49:04,880 --> 00:49:08,760
For many visitors, it was the
first time they understood what

628
00:49:08,760 --> 00:49:14,360
electricity could really do, not
as a curiosity in a laboratory,

629
00:49:14,800 --> 00:49:20,080
but as a presence that could
reshape the experience of night

630
00:49:20,120 --> 00:49:24,040
itself.
Tesla himself was present at the

631
00:49:24,040 --> 00:49:29,520
fair, giving demonstrations that
drew considerable attention.

632
00:49:30,320 --> 00:49:34,880
He showed alternating current
motors, fluorescent lighting,

633
00:49:35,240 --> 00:49:39,720
and high frequency electrical
effects that seemed almost

634
00:49:39,760 --> 00:49:42,800
magical.
He allowed current to pass

635
00:49:42,800 --> 00:49:47,640
through his own body to light
lamps, a dramatic illustration

636
00:49:47,640 --> 00:49:53,360
of how AC at certain frequencies
could be handled safely.

637
00:49:54,280 --> 00:49:59,840
The crowds were fascinated.
The man who had once dug ditches

638
00:49:59,840 --> 00:50:05,080
in New York was now standing on
a stage at the greatest public

639
00:50:05,080 --> 00:50:09,440
event in the country, showing
the world the system he had

640
00:50:09,440 --> 00:50:15,200
imagined in a park in Budapest.
The fair did not end the war of

641
00:50:15,200 --> 00:50:19,680
currents overnight, but it
shifted the weight of public

642
00:50:19,680 --> 00:50:25,200
perception decisively.
Alternating current had proven

643
00:50:25,200 --> 00:50:30,880
itself not in a pamphlet or an
argument, but in light on the

644
00:50:30,880 --> 00:50:36,800
largest stage imaginable.
If Chicago was the argument,

645
00:50:37,160 --> 00:50:43,680
Niagara Falls was the proof.
For years, engineers and

646
00:50:43,680 --> 00:50:47,720
investors had debated how to
harness the enormous energy of

647
00:50:47,720 --> 00:50:52,040
the falls, one of the most
powerful natural forces on the

648
00:50:52,040 --> 00:50:57,800
North American continent.
Water poured over the escarpment

649
00:50:58,120 --> 00:51:02,240
at a rate that staggered the
imagination, and everyone

650
00:51:02,240 --> 00:51:07,120
understood that whoever captured
even a fraction of that energy

651
00:51:07,560 --> 00:51:12,520
could power cities, factories
and railroads across a vast

652
00:51:12,520 --> 00:51:15,880
region.
And international Commission was

653
00:51:15,880 --> 00:51:21,200
formed to evaluate proposals.
Edison lobbied for direct

654
00:51:21,200 --> 00:51:24,960
current.
Westinghouse and Tesla presented

655
00:51:24,960 --> 00:51:27,440
the case for alternating
current.

656
00:51:28,360 --> 00:51:32,800
The Commission, after careful
study, chose AC.

657
00:51:33,760 --> 00:51:38,000
The decision was influenced in
part by the success at Chicago,

658
00:51:38,480 --> 00:51:41,040
but it rested ultimately on
physics.

659
00:51:41,680 --> 00:51:45,840
The factories and cities that
needed the power were more than

660
00:51:45,840 --> 00:51:51,160
20 miles from the falls.
Direct current simply could not

661
00:51:51,160 --> 00:51:55,840
bridge that distance.
Alternating current stepped up

662
00:51:55,840 --> 00:51:59,400
to high voltage by Transformers
could.

663
00:51:59,760 --> 00:52:07,040
Construction began in 1893, and
by 1896, the first AC power from

664
00:52:07,040 --> 00:52:11,240
Niagara Falls reached the city
of Buffalo, NY.

665
00:52:12,120 --> 00:52:15,120
It was a landmark in the history
of technology.

666
00:52:15,760 --> 00:52:20,600
For the first time, a large
quantity of electrical power had

667
00:52:20,600 --> 00:52:25,760
been generated at one location
and delivered over a significant

668
00:52:25,760 --> 00:52:30,680
distance to light homes, run
street cars, and drive

669
00:52:30,680 --> 00:52:36,560
industrial machines in another.
The achievement was not Tesla's

670
00:52:36,560 --> 00:52:40,640
alone.
Hundreds of engineers, laborers

671
00:52:40,640 --> 00:52:43,880
and planners contributed to the
project.

672
00:52:44,720 --> 00:52:49,280
Westinghouse's company managed
the contracts and built the

673
00:52:49,280 --> 00:52:53,680
equipment.
But the underlying system, the

674
00:52:53,680 --> 00:52:56,960
polyphase alternating current
design that made the

675
00:52:56,960 --> 00:53:00,800
transmission possible, was
Tesla's invention.

676
00:53:01,880 --> 00:53:06,040
When the power reached Buffalo
and the lights came on, it was a

677
00:53:06,040 --> 00:53:11,200
vindication not just of a
technology, but of a way of

678
00:53:11,200 --> 00:53:14,280
thinking.
The man who had seen rotating

679
00:53:14,280 --> 00:53:19,760
fields in his mind while walking
through a park had been right.

680
00:53:20,160 --> 00:53:25,200
Edison's vision of small local
generating stations, each

681
00:53:25,200 --> 00:53:29,760
serving its own neighborhood
with direct current, was not

682
00:53:29,760 --> 00:53:35,000
destroyed overnight.
Some DC systems continued to

683
00:53:35,080 --> 00:53:40,560
operate for decades, but the
strategic question had been

684
00:53:40,560 --> 00:53:44,360
answered.
The future of electrical power

685
00:53:44,760 --> 00:53:49,520
would be centralized generation
and long distance AC

686
00:53:49,520 --> 00:53:54,160
transmission.
The grid that would eventually

687
00:53:54,160 --> 00:53:58,240
stretch across continents,
connecting power plants to

688
00:53:58,240 --> 00:54:02,800
cities hundreds of miles away,
was born at Niagara.

689
00:54:03,240 --> 00:54:06,800
There is something quietly
moving about that moment.

690
00:54:07,440 --> 00:54:12,640
A waterfall that had roared for
thousands of years, admired by

691
00:54:12,640 --> 00:54:17,320
generations who saw in it
nothing but beauty and force,

692
00:54:17,960 --> 00:54:22,280
was now threaded into the life
of a distant city.

693
00:54:23,320 --> 00:54:28,040
Nature's energy, captured by
turbines converted into

694
00:54:28,040 --> 00:54:33,400
alternating current, lifted to
high voltage, carried through

695
00:54:33,400 --> 00:54:38,720
copper across the countryside
and delivered gently into lamps

696
00:54:38,720 --> 00:54:43,360
and motors.
Each link in that chain held,

697
00:54:43,880 --> 00:54:47,080
and at the far end the lights
were steady.

698
00:54:47,480 --> 00:54:52,280
The War of Currents was not yet
formally over, but after

699
00:54:52,280 --> 00:54:56,600
Niagara, the outcome was no
longer in doubt.

700
00:54:56,920 --> 00:55:03,000
Alternating current had won, but
victory, as it often does,

701
00:55:03,280 --> 00:55:08,000
arrived with complications that
neither triumph nor technology

702
00:55:08,000 --> 00:55:12,000
could smooth away.
Westinghouse had staked enormous

703
00:55:12,000 --> 00:55:16,680
resources on the war.
The contracts for Chicago and

704
00:55:16,680 --> 00:55:22,160
Niagara, while prestigious, had
been won at thin margins.

705
00:55:23,200 --> 00:55:27,320
The broader campaign to build AC
infrastructure across the

706
00:55:27,320 --> 00:55:32,400
country required capital on a
scale that strained even his

707
00:55:32,400 --> 00:55:37,160
considerable fortune.
By the mid 1890's, the

708
00:55:37,160 --> 00:55:41,760
Westinghouse Electric Company
was under severe financial

709
00:55:41,760 --> 00:55:44,480
pressure.
Creditors circled.

710
00:55:44,920 --> 00:55:49,680
Bankers demanded concessions.
The company that had carried

711
00:55:49,680 --> 00:55:54,160
alternating current to the world
was in danger of collapsing

712
00:55:54,160 --> 00:55:56,160
under the weight of its own
ambition.

713
00:55:56,560 --> 00:56:00,880
It was during this crisis that
Tesla made one of the most

714
00:56:00,880 --> 00:56:04,480
remarkable decisions in the
history of invention.

715
00:56:05,520 --> 00:56:10,160
Westinghouse came to him and
explained the situation plainly.

716
00:56:10,840 --> 00:56:17,520
The royalty agreement they had
signed, $2.50 per horsepower of

717
00:56:17,600 --> 00:56:22,520
AC electricity sold, had become
an existential threat to the

718
00:56:22,520 --> 00:56:27,680
company as alternating current
spread, the royalties owed to

719
00:56:27,680 --> 00:56:31,400
Tesla were growing toward
figures that no company could

720
00:56:31,400 --> 00:56:35,120
sustain.
If the contract stood,

721
00:56:35,520 --> 00:56:40,360
Westinghouse might be forced
into bankruptcy and the entire

722
00:56:40,800 --> 00:56:45,360
AC enterprise could fall into
the hands of financiers who

723
00:56:45,360 --> 00:56:47,920
cared nothing for the
technology.

724
00:56:48,320 --> 00:56:53,040
Tesla listened and then,
according to the accounts that

725
00:56:53,040 --> 00:56:56,200
have survived, he tore up the
contract.

726
00:56:56,560 --> 00:57:01,160
He did not renegotiate.
He did not ask for a reduced

727
00:57:01,160 --> 00:57:04,440
rate.
He simply released Westinghouse

728
00:57:04,640 --> 00:57:10,680
from the obligation entirely.
The decision cost him what would

729
00:57:10,680 --> 00:57:15,360
have been, by some estimates,
hundreds of millions of dollars

730
00:57:15,840 --> 00:57:20,280
in future royalties.
It was an act of extraordinary

731
00:57:20,280 --> 00:57:26,160
generosity, or extraordinary
naivety, or perhaps both at

732
00:57:26,160 --> 00:57:29,960
once.
Tesla believed in the technology

733
00:57:29,960 --> 00:57:32,680
more than he believed in the
money.

734
00:57:33,640 --> 00:57:37,160
He trusted that the work
mattered more than the reward,

735
00:57:37,840 --> 00:57:42,960
and he was willing to sacrifice
his own financial security to

736
00:57:42,960 --> 00:57:46,000
ensure that alternating current
survived.

737
00:57:46,400 --> 00:57:51,720
Whether this was wise is a
question the story never fully

738
00:57:51,720 --> 00:57:55,720
answers.
Tesla would spend much of his

739
00:57:55,720 --> 00:58:00,920
later life in financial
difficulty, dependent on modest

740
00:58:00,920 --> 00:58:07,040
consulting fees, occasional
patents and the kindness of

741
00:58:07,040 --> 00:58:10,840
admirers.
The fortune he gave away might

742
00:58:10,840 --> 00:58:16,080
have funded decades of research
and sustained the independence

743
00:58:16,080 --> 00:58:21,160
he valued so deeply.
Instead, it vanished into the

744
00:58:21,160 --> 00:58:26,800
survival of a company, and Tesla
moved forward, lighter in wealth

745
00:58:27,400 --> 00:58:30,120
but no less devoted to his
vision.

746
00:58:30,440 --> 00:58:33,320
Westinghouse never forgot the
gesture.

747
00:58:33,840 --> 00:58:39,440
He continued to support Tesla in
quieter ways, and the two men

748
00:58:39,640 --> 00:58:44,280
maintained a mutual respect that
outlasted the pressures of

749
00:58:44,280 --> 00:58:47,040
business.
Their partnership had been

750
00:58:47,040 --> 00:58:52,960
imperfect, sometimes strained,
but it had changed the world,

751
00:58:53,520 --> 00:58:57,360
and both of them knew it.
The war of currents was over.

752
00:58:57,680 --> 00:59:03,920
What remained was the longer,
quieter story of what became of

753
00:59:03,920 --> 00:59:08,360
the men who had fought it, and
what their fates reveal about

754
00:59:08,360 --> 00:59:13,040
the difference between building
a future and imagining one.

755
00:59:13,400 --> 00:59:17,880
After the War of Currents,
Tesla's life entered a stranger

756
00:59:18,200 --> 00:59:23,400
and more solitary chapter.
He remained brilliant.

757
00:59:24,280 --> 00:59:29,600
His mind still moved with the
same speed and clarity that had

758
00:59:29,600 --> 00:59:34,880
produced the polyphase motor.
But the world around him was

759
00:59:34,880 --> 00:59:38,640
changing in ways that did not
always favor the kind of

760
00:59:38,640 --> 00:59:43,800
inventor he was.
In the late 1890s, Tesla turned

761
00:59:43,800 --> 00:59:46,640
his attention to wireless
technology.

762
00:59:47,520 --> 00:59:51,760
He believed that electrical
energy could be transmitted

763
00:59:51,760 --> 00:59:57,440
without wires, not just as
signals but as usable power

764
00:59:58,040 --> 01:00:02,920
broadcast across distances.
The way light radiates from a

765
01:00:02,920 --> 01:00:05,760
lamp.
He built a laboratory in

766
01:00:05,760 --> 01:00:10,640
Colorado Springs where he
conducted dramatic experiments

767
01:00:11,040 --> 01:00:14,400
with high voltage, high
frequency electricity.

768
01:00:15,120 --> 01:00:20,480
He produced artificial lightning
bolts, lit lamps across a field

769
01:00:20,480 --> 01:00:25,040
without wires, and claimed to
have detected signals from

770
01:00:25,040 --> 01:00:28,200
beyond the earth.
The experiments were

771
01:00:28,200 --> 01:00:34,720
spectacular, but their practical
applications remained elusive.

772
01:00:35,040 --> 01:00:40,320
His grandest ambition took
physical form in Wardencliffe

773
01:00:40,320 --> 01:00:45,400
Tower, a transmission facility
he began constructing on Long

774
01:00:45,400 --> 01:00:49,480
Island in 19 O1.
The tower was intended as the

775
01:00:49,480 --> 01:00:54,560
anchor of a global wireless
communication and power system.

776
01:00:55,440 --> 01:01:00,560
Tesla envisioned a network that
could send messages, images and

777
01:01:00,560 --> 01:01:03,200
electrical energy to any point
on the planet.

778
01:01:04,000 --> 01:01:09,680
It was a vision so far ahead of
its time that it still sounds

779
01:01:09,680 --> 01:01:13,800
ambitious today.
But Wardenclyffe required

780
01:01:13,800 --> 01:01:21,080
enormous funding, and Tesla's
primary backer, the financier JP

781
01:01:21,080 --> 01:01:24,680
Morgan, eventually lost
confidence.

782
01:01:25,640 --> 01:01:30,000
Morgan had invested expecting a
profitable wireless

783
01:01:30,000 --> 01:01:35,720
communication system, not a
utopian scheme for free global

784
01:01:35,720 --> 01:01:39,080
energy.
When Tesla's vision expanded

785
01:01:39,080 --> 01:01:43,760
beyond what Morgan considered
viable, the money stopped.

786
01:01:44,360 --> 01:01:50,240
Construction halted.
The tower stood unfinished, a

787
01:01:50,240 --> 01:01:55,640
monument to an imagination that
had outrun its resources.

788
01:01:56,000 --> 01:02:00,880
Tesla did not recover easily.
He continued to file patents,

789
01:02:01,040 --> 01:02:06,720
give interviews and announce new
ideas, some visionary, others

790
01:02:07,040 --> 01:02:10,320
increasingly difficult to
verify.

791
01:02:11,160 --> 01:02:16,080
He spoke of energy weapons, of
machines that could photograph

792
01:02:16,080 --> 01:02:20,880
thoughts, of power sources that
defied conventional

793
01:02:20,880 --> 01:02:24,280
understanding.
Some of these ideas contained

794
01:02:24,280 --> 01:02:29,880
seeds of future technology.
Others drifted into territory

795
01:02:29,880 --> 01:02:34,680
that made even sympathetic
observers uneasy.

796
01:02:35,040 --> 01:02:38,360
He grew more isolated as the
years passed.

797
01:02:38,880 --> 01:02:44,560
He lived in a series of New York
hotels, often unable to pay his

798
01:02:44,560 --> 01:02:48,200
bills, moving when debts
accumulated.

799
01:02:48,800 --> 01:02:52,600
He developed intense personal
rituals and compulsions.

800
01:02:53,320 --> 01:02:58,800
He fed pigeons in the parks with
a devotion that struck many as

801
01:02:58,800 --> 01:03:02,560
eccentric and others as heart
breaking.

802
01:03:03,440 --> 01:03:08,840
He was still recognized, still
occasionally celebrated, but the

803
01:03:08,840 --> 01:03:13,160
gap between his reputation and
his circumstances widened

804
01:03:13,160 --> 01:03:16,040
steadily.
There is no simple way to

805
01:03:16,040 --> 01:03:20,920
explain what happened to Tesla.
He was not destroyed by a single

806
01:03:20,920 --> 01:03:26,920
failure or a single enemy.
He was undone gradually by

807
01:03:26,920 --> 01:03:32,640
financial misjudgment, personal
pride, the absence of a partner

808
01:03:32,640 --> 01:03:37,680
like Westinghouse, and the fact
that some of his ideas were

809
01:03:37,680 --> 01:03:40,880
simply too early for the world
around him.

810
01:03:41,280 --> 01:03:45,120
Edison's later years followed a
very different arc.

811
01:03:45,760 --> 01:03:50,680
Where Tesla drifted towards
solitude and abstraction, Edison

812
01:03:50,680 --> 01:03:55,800
remained firmly planted in the
world of commerce, production,

813
01:03:56,280 --> 01:04:00,880
and public life.
He continued to work with fierce

814
01:04:00,880 --> 01:04:05,880
energy well into old age, and
his reputation as America's

815
01:04:05,880 --> 01:04:09,680
greatest inventor only deepened
with time.

816
01:04:10,080 --> 01:04:15,160
After the War of Currents,
Edison gradually accepted what

817
01:04:15,160 --> 01:04:20,400
the market had decided.
His company reorganized and

818
01:04:20,400 --> 01:04:25,880
merged into General Electric,
eventually adopted alternating

819
01:04:25,880 --> 01:04:28,960
current alongside direct
current.

820
01:04:29,320 --> 01:04:34,080
Edison himself stepped back from
the electrical utility business

821
01:04:34,480 --> 01:04:37,640
and turned his attention to
other projects.

822
01:04:38,600 --> 01:04:43,200
He worked on improving the
storage battery, experimented

823
01:04:43,200 --> 01:04:47,960
with cement construction,
explored methods for extracting

824
01:04:48,040 --> 01:04:53,000
iron ore from low grade
deposits, and invested years in

825
01:04:53,000 --> 01:04:56,280
developing a domestic source of
natural rubber.

826
01:04:56,560 --> 01:05:00,400
Not all of these ventures
succeeded, but the pattern was

827
01:05:00,400 --> 01:05:03,960
consistent.
Edison kept working.

828
01:05:04,160 --> 01:05:07,200
He kept trying.
He kept building.

829
01:05:07,520 --> 01:05:12,400
His public image solidified into
something almost mythic.

830
01:05:13,040 --> 01:05:18,520
He was the self-made man, the
tireless worker, the embodiment

831
01:05:18,520 --> 01:05:23,920
of American ingenuity.
Schools taught his name

832
01:05:23,920 --> 01:05:28,640
alongside Franklin and Lincoln.
Journalists visited his

833
01:05:28,640 --> 01:05:33,280
laboratory for interviews and
came away with quotable wisdom

834
01:05:33,280 --> 01:05:38,920
about persistence, hard work and
the value of practical results.

835
01:05:39,400 --> 01:05:43,080
He became not just an inventor
but a symbol.

836
01:05:43,440 --> 01:05:48,200
And yet, beneath the legend,
there were limitations that time

837
01:05:48,200 --> 01:05:52,480
made clearer.
Edison's method, brilliant as it

838
01:05:52,480 --> 01:05:56,440
was, depended on brute
persistence more than

839
01:05:56,440 --> 01:06:01,240
theoretical insight.
He was famously dismissive of

840
01:06:01,240 --> 01:06:04,520
mathematics and abstract
science.

841
01:06:05,160 --> 01:06:10,080
He once remarked that he could
hire a mathematician whenever he

842
01:06:10,080 --> 01:06:16,320
needed one, a comment that
revealed both his pragmatism and

843
01:06:16,320 --> 01:06:19,640
his blind spot.
The electrical future that

844
01:06:19,640 --> 01:06:23,880
emerged after the War of
Currents was built increasingly

845
01:06:23,880 --> 01:06:29,440
on theoretical foundations, on
the mathematics of Maxwell, the

846
01:06:29,440 --> 01:06:34,320
physics of Faraday, and the
engineering principles that

847
01:06:34,320 --> 01:06:40,000
Tesla had mastered.
Edison's empirical approach, so

848
01:06:40,000 --> 01:06:44,480
effective in the workshop,
became less dominant as

849
01:06:44,480 --> 01:06:49,360
technology grew more complex.
He also carried the shadow of

850
01:06:49,360 --> 01:06:53,880
the war of currents for the rest
of his life, though he rarely

851
01:06:53,880 --> 01:06:57,680
spoke of it directly.
History would remember the

852
01:06:57,680 --> 01:07:03,160
animal electrocutions, the
electric chair campaign, and the

853
01:07:03,160 --> 01:07:06,960
stubbornness with which he had
fought against a superior

854
01:07:06,960 --> 01:07:10,520
system.
These were not the acts of a

855
01:07:10,520 --> 01:07:13,920
fool.
They were the acts of a man who

856
01:07:13,920 --> 01:07:17,960
had built something
extraordinary and could not bear

857
01:07:17,960 --> 01:07:22,160
to see it replaced.
But they complicated the legacy,

858
01:07:22,720 --> 01:07:27,520
adding a streak of ruthlessness
to a story that might otherwise

859
01:07:27,520 --> 01:07:33,200
have been purely admiring.
Edison died in October of 1931

860
01:07:33,200 --> 01:07:37,000
at 84.
The tributes were enormous.

861
01:07:37,600 --> 01:07:41,920
President Hoover asked Americans
to dim their lights in his

862
01:07:41,920 --> 01:07:44,920
honor.
It was a fitting gesture.

863
01:07:45,560 --> 01:07:49,840
The man who had done more than
almost anyone to bring electric

864
01:07:49,840 --> 01:07:55,120
light into daily life was
mourned in the soft glow of the

865
01:07:55,120 --> 01:08:00,640
world he had helped create.
Tesla died 12 years later, in

866
01:08:00,640 --> 01:08:06,000
January of 1943, alone in a room
at The New Yorker Hotel.

867
01:08:06,520 --> 01:08:11,320
He was 8, a six.
He had spent his final years in

868
01:08:11,320 --> 01:08:16,720
near poverty, sustained by a
modest stipend from the Yugoslav

869
01:08:16,720 --> 01:08:21,520
government and occasional
kindnesses from old admirers.

870
01:08:22,640 --> 01:08:28,439
His room was filled with papers,
sketches and notes that the FBI

871
01:08:28,439 --> 01:08:32,720
reportedly seized after his
death, feeding decades of

872
01:08:32,720 --> 01:08:36,680
speculation about what secrets
they might contain.

873
01:08:37,080 --> 01:08:41,080
The contrast between the two
men's endings says something,

874
01:08:41,600 --> 01:08:46,040
though it is important not to
let it say the wrong thing.

875
01:08:46,840 --> 01:08:51,520
It would be tempting to conclude
that Edison was rewarded for his

876
01:08:51,520 --> 01:08:56,720
pragmatism and Tesla was
punished for his idealism.

877
01:08:57,600 --> 01:09:03,560
But the truth is less tidy.
Edison's success owed as much to

878
01:09:03,560 --> 01:09:08,840
his business instincts and
willingness to compromise as it

879
01:09:08,840 --> 01:09:14,560
did to his inventiveness.
Tesla's failure owed as much to

880
01:09:14,560 --> 01:09:19,359
his inability to manage money
and partnerships as it did to

881
01:09:19,359 --> 01:09:24,720
the grandeur of his visions.
Neither man's fate was purely a

882
01:09:24,720 --> 01:09:29,760
consequence of his ideas.
Both were shaped by temperament,

883
01:09:29,960 --> 01:09:35,840
circumstance, and the particular
cruelties and kindnesses of

884
01:09:35,840 --> 01:09:38,920
their era.
What each man represents,

885
01:09:38,920 --> 01:09:43,200
though, is something more
durable than biography.

886
01:09:44,399 --> 01:09:48,479
Edison stands for the builder,
the person who takes an

887
01:09:48,479 --> 01:09:53,359
imperfect idea and wrestles it
into the world through sheer

888
01:09:53,359 --> 01:09:57,840
determination.
He reminds us that invention

889
01:09:57,840 --> 01:10:04,800
without delivery is incomplete.
A beautiful concept that never

890
01:10:04,800 --> 01:10:09,760
reaches a customer, never lights
a room, never powers a machine,

891
01:10:10,240 --> 01:10:15,800
remains only a concept.
Edison understood that the last

892
01:10:15,800 --> 01:10:21,080
mile of innovation, the wiring,
the billing, the maintenance,

893
01:10:21,080 --> 01:10:25,480
the customer service, is not
beneath the inventor.

894
01:10:26,120 --> 01:10:28,320
It is part of the invention
itself.

895
01:10:28,880 --> 01:10:33,560
Tesla stands for something else.
He stands for the person who

896
01:10:33,560 --> 01:10:38,680
sees farther than the present
allows, who imagined systems so

897
01:10:38,680 --> 01:10:44,320
complete and so elegant that
they cannot be built within a

898
01:10:44,320 --> 01:10:47,800
single lifetime or a single
budget?

899
01:10:48,720 --> 01:10:52,600
He reminds us that progress
often begins with visions that

900
01:10:52,600 --> 01:10:58,360
seem impossible, and that the
people who hold those visions

901
01:10:58,800 --> 01:11:02,000
are not always the ones who
profit from them.

902
01:11:02,440 --> 01:11:07,480
Tesla's alternating current
powers, the world his name

903
01:11:07,480 --> 01:11:09,880
adorns, a company he never
founded.

904
01:11:10,560 --> 01:11:15,120
His face appears on currency in
countries he left behind.

905
01:11:15,920 --> 01:11:20,480
The rewards arrived, but they
arrived too late and in the

906
01:11:20,480 --> 01:11:23,960
wrong form.
The tension between these two

907
01:11:23,960 --> 01:11:26,240
figures is not a flaw in the
story.

908
01:11:26,680 --> 01:11:31,800
It is the story.
Every generation faces the same

909
01:11:31,800 --> 01:11:37,520
question in different dress.
How much should we value the

910
01:11:37,520 --> 01:11:42,040
person who delivers him
perfectly now versus the person

911
01:11:42,040 --> 01:11:44,440
who imagines perfectly for
later?

912
01:11:45,040 --> 01:11:48,160
How do we balance the urgent and
the visionary?

913
01:11:48,720 --> 01:11:52,840
How do we honor the builder
without dismissing the dreamer,

914
01:11:53,360 --> 01:11:57,080
and honor the dreamer without
forgetting that someone

915
01:11:57,120 --> 01:12:02,680
eventually has to lay the wire?
There is no clean answer.

916
01:12:03,040 --> 01:12:06,200
Edison and Tesla did not resolve
that tension.

917
01:12:06,640 --> 01:12:11,280
They embodied it, lived inside
it, and left it for the rest of

918
01:12:11,280 --> 01:12:16,760
us to carry forward.
And so the current flows on the

919
01:12:16,760 --> 01:12:21,520
electrical grid that surrounds
you tonight, humming softly

920
01:12:21,520 --> 01:12:27,240
inside the walls, reaching from
power plants to substations to

921
01:12:27,240 --> 01:12:32,640
the outlet beside your bed, is
fundamentally the system that

922
01:12:32,640 --> 01:12:35,960
Tesla envisioned in Westinghouse
built.

923
01:12:36,880 --> 01:12:43,200
It runs on alternating current.
It uses Transformers to step

924
01:12:43,200 --> 01:12:48,480
voltage up and down.
It transmits power across

925
01:12:48,480 --> 01:12:53,320
hundreds of miles from
centralized generating stations.

926
01:12:53,760 --> 01:12:58,280
The architecture has been
refined and modernized over more

927
01:12:58,280 --> 01:13:03,240
than a century, but the
underlying principle remains

928
01:13:03,240 --> 01:13:09,680
what it was when the first AC
power left Niagara Falls and

929
01:13:09,680 --> 01:13:13,920
arrived in Buffalo.
You do not think about this when

930
01:13:13,920 --> 01:13:16,760
you flip a switch.
No one does.

931
01:13:17,480 --> 01:13:23,280
That is part of the achievement.
The best infrastructure

932
01:13:23,280 --> 01:13:28,600
disappears into the background
of daily life, so reliable and

933
01:13:28,600 --> 01:13:33,160
so constant that it becomes
invisible.

934
01:13:34,240 --> 01:13:38,520
Electricity is the air
conditioning that cools the

935
01:13:38,520 --> 01:13:44,080
room, the refrigerator that
homes in the kitchen, the charge

936
01:13:44,080 --> 01:13:46,920
flowing into the phone on the
night stand.

937
01:13:47,560 --> 01:13:52,480
It is the light you turned on
without wondering where the

938
01:13:52,480 --> 01:13:58,240
power came from, and the light
you will turn off when sleep

939
01:13:58,360 --> 01:14:04,000
finally arrives.
Somewhere outside, a transformer

940
01:14:04,000 --> 01:14:09,800
sits on a utility pole or inside
a green metal box on the

941
01:14:09,800 --> 01:14:14,120
sidewalk, quietly stepping
voltage down from the

942
01:14:14,120 --> 01:14:19,360
transmission lines to level,
safe for household use.

943
01:14:20,280 --> 01:14:26,080
That transformer is a direct
descendant of the devices that

944
01:14:26,080 --> 01:14:29,240
made alternating current
practical.

945
01:14:30,240 --> 01:14:35,760
It does its work without noise,
without drama, without

946
01:14:35,760 --> 01:14:40,200
recognition.
It is one of the most important

947
01:14:40,240 --> 01:14:45,560
objects in modern civilization,
and almost no one knows its

948
01:14:45,560 --> 01:14:48,640
name.
The generators have changed, of

949
01:14:48,640 --> 01:14:51,640
course.
Coal and steam have been joined

950
01:14:51,640 --> 01:14:58,680
by natural gas, nuclear fission,
wind turbines and solar panels.

951
01:14:59,800 --> 01:15:05,320
The grid itself has grown into
something enormously complex, a

952
01:15:05,320 --> 01:15:10,280
network of networks managed by
computers and governed by

953
01:15:10,280 --> 01:15:14,680
regulations that Edison and
Tesla could never have

954
01:15:14,680 --> 01:15:19,760
anticipated.
But the fundamental insight that

955
01:15:19,760 --> 01:15:25,640
electricity should be generated
centrally, transmitted at high

956
01:15:25,640 --> 01:15:31,760
voltage, and delivered locally
at safe levels belongs to the

957
01:15:31,760 --> 01:15:35,400
world those two men brought into
being.

958
01:15:35,800 --> 01:15:40,440
Even direct current has found
new life in certain

959
01:15:40,440 --> 01:15:44,880
applications.
Modern electronics, batteries,

960
01:15:45,160 --> 01:15:48,720
and solar cells all work with
DC.

961
01:15:49,720 --> 01:15:54,480
High voltage direct current
transmission has become

962
01:15:54,480 --> 01:15:59,640
practical for very long
distances and undersea cables.

963
01:16:00,200 --> 01:16:05,080
Thanks to advances in conversion
technology that did not exist in

964
01:16:05,080 --> 01:16:11,720
Edison's day, the old rivalry
has softened into coexistence.

965
01:16:12,560 --> 01:16:17,840
Both forms of current serve the
modern world, each suited to

966
01:16:17,840 --> 01:16:22,480
different tasks, each carrying
the memory of the men who

967
01:16:22,480 --> 01:16:27,840
championed them.
Tonight, lying in the quiet, you

968
01:16:27,840 --> 01:16:33,440
are held inside a web of copper
and aluminum, of generators and

969
01:16:33,440 --> 01:16:40,560
Transformers, of decisions made
by engineers and investors more

970
01:16:40,560 --> 01:16:45,240
than 100 years ago.
The current that reaches your

971
01:16:45,240 --> 01:16:49,880
room has travelled farther than
you will ever know, and it

972
01:16:49,880 --> 01:16:54,360
arrives so gently that you feel
nothing at all.

973
01:16:54,800 --> 01:17:03,040
So now the story can grow quiet.
Two men, born a generation apart

974
01:17:03,040 --> 01:17:08,480
on different continents, each
brilliant in his own way, each

975
01:17:08,480 --> 01:17:14,840
flawed in his own way, fought
over how the invisible force of

976
01:17:14,840 --> 01:17:18,400
electricity should reach the
World.

977
01:17:18,760 --> 01:17:22,720
One built systems with stubborn
hands and sold them with a

978
01:17:22,720 --> 01:17:27,400
showman's instinct.
The other saw futures in his

979
01:17:27,400 --> 01:17:32,280
mind with a clarity that
bordered on the supernatural and

980
01:17:32,280 --> 01:17:37,440
trusted that elegance would
eventually be recognized.

981
01:17:38,160 --> 01:17:44,040
They clashed, they wounded each
other, and between them they

982
01:17:44,040 --> 01:17:47,720
created the foundation of modern
life.

983
01:17:48,160 --> 01:17:53,240
Edison gave us the idea that
invention is not complete until

984
01:17:53,240 --> 01:17:58,360
it serves a customer.
Tesla gave us the idea that

985
01:17:58,360 --> 01:18:03,000
invention must sometimes aim
beyond what the present can

986
01:18:03,000 --> 01:18:07,240
hold.
Edison taught that persistence

987
01:18:07,240 --> 01:18:13,640
matters more than inspiration.
Tesla taught that vision matters

988
01:18:13,640 --> 01:18:18,200
more than persistence.
Neither lesson is the whole

989
01:18:18,200 --> 01:18:24,720
truth, and neither is wrong.
The world needed both arguments,

990
01:18:25,240 --> 01:18:31,040
and it still does.
The war they fought is over, but

991
01:18:31,040 --> 01:18:34,080
the tension they embodied is
not.

992
01:18:34,760 --> 01:18:40,440
It lives in every laboratory,
every startup, every argument

993
01:18:41,000 --> 01:18:46,560
between the person who says ship
it now and the person who says

994
01:18:47,160 --> 01:18:51,920
make it right.
It lives in the distance between

995
01:18:51,920 --> 01:18:55,600
what the market wants and what
the future needs.

996
01:18:55,960 --> 01:19:00,840
It lives wherever someone must
choose between the profitable

997
01:19:01,080 --> 01:19:05,840
and the beautiful, between the
proven and the possible.

998
01:19:06,120 --> 01:19:10,360
That tension is not a problem to
be solved.

999
01:19:10,800 --> 01:19:15,000
It is a feature of how progress
actually works.

1000
01:19:15,120 --> 01:19:19,920
Messy.
Contentious and carried forward

1001
01:19:19,920 --> 01:19:25,000
by people who disagree for
reasons both sides believe are

1002
01:19:25,000 --> 01:19:28,960
important.
Perhaps that is something to be

1003
01:19:28,960 --> 01:19:35,080
held the way a wire holds a
current, the way a story holds a

1004
01:19:35,080 --> 01:19:39,840
meaning that cannot be reduced
to a single sentence.

1005
01:19:40,720 --> 01:19:44,360
Edison and Tesla were not
opposites.

1006
01:19:44,760 --> 01:19:48,520
They were two halves of a
conversation that the world

1007
01:19:48,520 --> 01:19:52,680
still needs.
A conversation about ambition,

1008
01:19:53,040 --> 01:19:58,160
about craft, about what we owe
the future and what we owe the

1009
01:19:58,160 --> 01:20:01,520
present.
The pragmatist without the

1010
01:20:01,520 --> 01:20:05,400
dreamer builds only what already
exists.

1011
01:20:06,080 --> 01:20:09,520
The dreamer without the
pragmatist builds only what

1012
01:20:09,520 --> 01:20:14,840
cannot yet be touched.
Outside this room, the grid is

1013
01:20:14,840 --> 01:20:19,400
still alive.
Somewhere a turbine turns in the

1014
01:20:19,400 --> 01:20:24,640
dark.
Somewhere a transformer hums on

1015
01:20:24,640 --> 01:20:29,680
a quiet St.
Somewhere electricity crosses a

1016
01:20:29,680 --> 01:20:34,200
distance that would have seemed
impossible to the men who first

1017
01:20:34,200 --> 01:20:39,280
argued about how to send it.
The current does not remember

1018
01:20:39,280 --> 01:20:47,840
who won or who lost, it only
moves steady and patient through

1019
01:20:47,840 --> 01:20:51,640
the night.
If these quiet journeys help you

1020
01:20:51,640 --> 01:20:58,200
rest, you can follow sleep Wise
and share it with someone who

1021
01:20:58,200 --> 01:21:03,920
might enjoy falling asleep while
learning something new.

1022
01:21:04,320 --> 01:21:09,280
The lights are dimming now.
The old argument has faded into

1023
01:21:09,280 --> 01:21:14,160
the hum of the walls.
Two men, long gone, still

1024
01:21:14,160 --> 01:21:18,960
holding the world's lights on.
One who built with his hands.

1025
01:21:19,520 --> 01:21:26,960
One who built with his mind.
Both necessary, both incomplete

1026
01:21:27,200 --> 01:21:32,120
without the other.
The room is dark, the current

1027
01:21:32,240 --> 01:21:37,320
still flows.
The world slows, and so do we.

1028
01:21:37,680 --> 01:21:38,400
Good night.