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Dennis Whyte

๐Ÿ‘ค Speaker
1833 total appearances

Appearances Over Time

Podcast Appearances

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

Make a plasma, then you get it hot enough, and when you get it hot enough, the fusion reactions start happening so rapidly that it's overcoming the rate at which it's leaking heat to the outside world, and at some point it just becomes like a star, right?

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

Like a sun, our own sun and a star doesn't have anything plugged into it.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

It's just keeping itself hot through its own fusion reactions.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

In the end, that's really close to what a fusion power plant would look like.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

Yeah, actually, it's invisible to the eye because it's so hot that it's basically emitting light in frequencies that we can't detect.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

It's invisible, perfectly.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

In fact, light goes through it.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

Visible light goes through it so easy that if you were to look at it, what you would see...

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

In our own particular configuration, what we make is in the end is a donut-shaped, it's a vacuum vessel to keep the air out of it.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

And when you turn on the plasma, it gets so hot that most of it just disappears in the visible spectrum.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

You can't see anything.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

And there's very, very cold plasma, which is between 10 and 100,000 degrees, which is out in the very periphery of it, which is kind of... So the very cold plasma is allowed to interact with the...

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

It kind of has to interact with something eventually at the boundary of the vacuum vessel.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

And this kind of makes a little halo around it.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

And it glows this beautiful purple light, basically.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

And that's what we can sense in the human spectrum.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

Actually, I do have...

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

This goes off in a bit.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

You're right.

Lex Fridman Podcast
#353 โ€“ Dennis Whyte: Nuclear Fusion and the Future of Energy

This is actually, it's interesting because, you know, as a scientist, you also think about evolutionary functions and how we got, like, why do we have the senses that we do?