One part of the virus grabs a carbon nanotube, the other part of the virus has a sequence that can grow an electrode material for a battery, and then it wires itself to the current collector.

The devices that computers use are what's called a transistor.

It's no more than an anode and a cathode separated by an electrolyte, right?

That's a little better. Woman That side is better.

And his thoughts made him reach for Katie.

Volta's battery works at room temperature.

This is where the supply of current flows out from, you see?

We can now reach those circuits.

Your electrodes came off last night.

This electrode here, called the gate, controls the flow of current from the source to the drain these two electrodes.

So this is what we did.

And this forces magnesium to de alloy and return to the upper electrode, restoring the initial constitution of the battery.

like the one that you can see here in the photo.

This is work done with my colleague Helen Mayberg from Emory.

I've got a real estate problem.

They put electrodes or sensors on my head.

Miss baum's electrodes must have slipped off again.

So this looks something like this.

This is the place where the meditators you can see it's kind of inspiring.

I'll be back later to attach your electrodes.

In the 1950s,

And that current, electrical current, is carried by electrons, just like in your house and so on.

This is the starting point for designing a battery two electrodes, in this case metals of different composition, and an electrolyte, in this case salt dissolved in water.

We stimulate one place, the other place. We can stimulate lots of places.

The lights are out in these areas of the brain.

And here we can see him getting the therapy.

Now they know what part of the brain they can remove in order to cure the patient.

And what you have here is, when you actually turn on the gate, you get an increase in the amount of current, and you get a steady flow of current.

All this paraphernalia. He might panic.

And the astronauts went up and experienced the pinnacle of separation.

And this is one of the ways you can study play is to get a 256 lead electroencephalogram.

Geographic Pole

I think it's atrocious.

And to power this, you'll need some kind of battery to connect them.

Every time you contract a muscle, it emits a little electricity that you can record with antennae or electrodes and use that to operate the motorized prosthesis.

You think, Bend elbow, a different section contracts.

It's a bit like this imagine that we'd only ever encountered Euclidean space.

Polar

So this looks something like this when it's in the brain.

We copy this in the lab by outfitting cell culture systems with electrodes.

This is a bargaining game.

Most people don't like the electrodes first time out. Makes 'em feel like frankenstein.

You two really underdo it.

We believe there's some water in the polar caps, there are polar caps of North Pole and South Pole.

She's putting electrodes on his head so that we can monitor the electrical activity in John's brain as he races around the track.