It's actually hitting a tooth.

And cogs begin to grind and pound

Gearhead

A gearhead

All right, next.

It's because the pulse of light is not coming back through the same notch.

Number of gears

What's in the gears?

They're in the gears.

What would happen if we captured it?

I'll call you as soon as I secure a vehicle.

Now we can make the gears thicker and stronger, and we have differential gears.

And then, based on the distance between the two stations and the speed of his wheel and the number of notches in the wheel, he calculates the speed of light to within two percent of its actual value.

Will you get my car, please?

The schools would produce the people who would then become parts of the bureaucratic administrative machine.

You can do bigger things.

Let's fasten a spoke on the inner end of each axle.

I brush my teeth twice a day.

It's the way all can be part of that wheel.

They must be identical to each other.

If I point a beam through this notch at a mirror, five miles away, that beam is bouncing off the mirror and coming back to me through this notch.

I mean, real jewelers put little bits of solder in.

Wheels turn on axles.

No, is a tooth, my daughter's teeth

Turn the car around.

The cog wheels are in gear.

If you're on the go you can make these changes from the ME tab on Twitter's official applications.

You shouldn't run around with a toothbrush in your mouth.

What I'll do is I'll give you the very basics, and I'll let you implement the very basics. I promise it'll be fun.

I'll take an impression of your teeth.

A small gear is missing here.

I'm with you. ( dramatic theme playing ) ( siren blaring ) You got that bulletin out describing the car?

Let's put this bar on a pin, so that it can swing in either direction.

Dentists take x rays to examine your teeth.

Take the car round back to unload it.

It's what the dentist cleans off your teeth every time that you go in for a visit.

CA It's a common object that literally fits one million Earths.

So you get in your car, and as you get in your car, your car will reserve you a parking spot before you arrive no more driving around looking for one, which frankly is one of the biggest users of fuel in today's cars in urban areas is looking for parking spots.

I'll take some X rays of your teeth.

This tooth is loose.

Our own future and the future of others.

And he's just lapping a slower car.

Tooth for tooth.

Did you brush your teeth?

I have bleeding gums.