A balloon was floating in the air.

Light up all the empty squares by placing light bulbs in some of them

When the ballons are laid out, they're totally flat.

Air.

And I have 100 of them.

But, because the Earth spins, the moving air curves to the right in the Northern Hemisphere because of the coriolis effect.

The light bulb has burned out.

Aerostat!

Telephone. Electricity.

But there is another possibility that you all know of spherical space.

We have this tendency to think that only solid, material things are really things at all.

40 Watt incandescent lamp

100 Watt incandescent lamp

200 Watt incandescent lamp

No, your flashlight is meant to illuminate.

A hot air balloon.

That's a generator.

Instead of blowing the balloon up like a party balloon, they use a giant flame to heat the air inside that envelope.

A han noston ned 'wilith. I smell it in the air.

The air...

What about the air?

So for example, if we're looking at light bulb eight.

lasers, portable X Rays, shielding for nuclear reactors, compact discs, hybrid vehicle motors,

For us, we're very facile around electricity.

Power plant.

Permittivity of Vacuum

If it were not for air, we could not live on the earth.

The earth is just a sphere suspended in space.

It's just a huge machine, and it uses five percent of the global electricity on the planet.

Edison invented the light bulb.

The light is out.

So I have one light bulb there.

I'm going to number them one through 100.

But I think you get the point.

So what's our question?

Here are the cables coming up into this light fixture.

As you might guess doing so would take a huge amount computation for even the most modest scene.

You know, this type of bulbs produces a lot of heat.

Noticed a bulb was out.

Electric irons are heated by electricity.

Electromagnetism

Electric

Electric relay

There's no damned air here at all.

And the part of the electric revolution that I want to focus on is sort of the golden age of appliances.