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David Kirtley

๐Ÿ‘ค Speaker
See mentions of this person in podcasts
1578 total appearances

Appearances Over Time

Podcast Appearances

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

than the initial one did, the initial uranium or plutonium.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And in that process, again, E equals mc squared, a tremendous amount of energy is released.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

There's a very famous curve in atomic physics, fusion or fission, looking at the periodic table, going from the lightest elements, hydrogen, to the heaviest elements, those uranium, plutonium, and others.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And fusion happens up to iron.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

Iron is the magical point in between where lighter elements than iron fuse together

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

and heavier elements fizz or fizzile and break apart and release energy.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

I think about and I look at that process in stars, in that our star is fundamentally an early-stage star that's burning just hydrogens.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

But when it burns and does fusion, those hydrogens combine into heliums, and later-stage stars can then burn those heliums.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And they can fuse those together to form even heavier elements and carbons.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And those carbons can fuse together and form heavier elements.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And that whole stellar process is something that inspires us at Helion to think about what are fusion fuels, not just the simplest ones, but more advanced fusion fuels that we see in stars throughout the universe.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

E equals MC squared is a fundamental relationship that a patent clerk, Einstein, discovered and unlocked an entire new realm of physics and engineering and has shown us a

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

Atomic physics, what happens inside the nucleus, and unlocked our understanding of the universe and paved the way for many of the physics advancements that came after that we think about mass as these particles.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

But in reality, also, at the same time, they're energy.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And there's a direct quantitative relationship between how much energy is in all of that mass.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And in fact, all of the energy that is released...

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

even by atomic physics, certainly in atomic reactions, is equals MC squared.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

And that I think most people have heard of and are used to.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

But also in chemistry and in chemical bonds, that in those chemical bonds, there is a change in mass.

Lex Fridman Podcast
#485 โ€“ David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

When you take a hydrogen and an oxygen and you burn them and you combine them into water, there's a change in mass.