SR and because normally brain cells don't respond to pulses of light, so those that would respond to pulses of light are those that contain a light sensitive switch.

So this creates pulses of light that last a femtosecond.

Electromagnetic pulse.

Pulse activated.

This is a pulse of light that's only about one wavelength of light long, so it's a whole bunch of photons all coming and hitting simultaneously.

This is my collaborator Ryota Kanai.

COMPUTER Two minutes to pulse activation.

COMPUTER 90 seconds to pulse activation.

Pulse activation in 30 seconds.

Pulse activation in 15 seconds.

It's got a bunch of notches and it's got a bunch of teeth.

Female Voice

We can shoot light into the brain to reactivate the memory of the blue box.

Electric pulse generators from the Galactica.

That's electromagnetic pulses.

So, you know, it's sort of a complicated thing.

What does that mean?

So we've eliminated nuclear launches, EMPs,

I'm going to show you some of the past of big technology.

And we're going to show you, instead of the kill laser, which will be a very brief, instantaneous pulse, we're going to have a green laser pointer that's going to stay on the mosquito for, actually, quite a long period of time otherwise, you can't see it very well.

That's me and my sister, Esther, who's a frequent TEDster.

Victor's gotta have a pulse emitter linking him to his board.

Tim uses his thoughts to control an advanced prosthetic arm.

Prevent or ameliorate migraine headaches by the application of a safe, controlled magnetic pulse applied, as needed, by the patient.

You can put a knob in between and now you've made a little dimmer.

The light.

Red light, green light.

Photons

photons

The horses were climbing up a hilly piece of road when she first caught sight of a

A light?

Light.

Mm hmm.

Moonlight

moon light

Light

Light source

Daylight

global photons

Caustics

light

Global lights

Emission

Global Photons

Lightning