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Post by mikegarrison on Sept 21, 2021 17:11:20 GMT -5
Because I don't want to diverge into this subject in a post about killing children.
Basically there are two energy sources available to humans, and both are nuclear.
1) fusion -- mainly from the sun
2) fission -- mainly from fissile elements that were created in supernovas and ended up in the Earth
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But what about coal, oil, etc.? All of this is essentially stored solar energy.
What about geothermal? It was proven long ago that without the energy from radioactive decay, the Earth's core would have long ago cooled to at least the point where it was solid. There would still be residual heat from the formation of the Earth, but a lot less than there is today. The difference is mainly the energy from the decay of uranium. Not too many elements are radioactive enough to give off heat but also long-lived enough to still be giving off heat 4.5 billion years later.
What about tides? Yes, this is a third energy source. Tides take kinetic energy from the Moon's orbit and turn it into kinetic energy in the oceans.
What about magnets? How do they even work?
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Post by AmeriCanvbdad on Sept 21, 2021 17:23:04 GMT -5
Because I don't want to diverge into this subject in a post about killing children. Basically there are two energy sources available to humans, and both are nuclear. 1) fusion -- mainly from the sun 2) fission -- mainly from fissile elements that were created in supernovas and ended up in the Earth ======== But what about coal, oil, etc.? All of this is essentially stored solar energy. What about geothermal? It was proven long ago that without the energy from radioactive decay, the Earth's core would have long ago cooled to at least the point where it was solid. There would still be residual heat from the formation of the Earth, but a lot less than there is today. The difference is mainly the energy from the decay of uranium. Not too many elements are radioactive enough to give off heat but also long-lived enough to still be giving off heat 4.5 billion years later. What about tides? Yes, this is a third energy source. Tides take kinetic energy from the Moon's orbit and turn it into kinetic energy in the oceans. What about magnets? How do they even work? Where does wind fit in?
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Post by mikegarrison on Sept 21, 2021 17:26:21 GMT -5
Because I don't want to diverge into this subject in a post about killing children. Basically there are two energy sources available to humans, and both are nuclear. 1) fusion -- mainly from the sun 2) fission -- mainly from fissile elements that were created in supernovas and ended up in the Earth ======== But what about coal, oil, etc.? All of this is essentially stored solar energy. What about geothermal? It was proven long ago that without the energy from radioactive decay, the Earth's core would have long ago cooled to at least the point where it was solid. There would still be residual heat from the formation of the Earth, but a lot less than there is today. The difference is mainly the energy from the decay of uranium. Not too many elements are radioactive enough to give off heat but also long-lived enough to still be giving off heat 4.5 billion years later. What about tides? Yes, this is a third energy source. Tides take kinetic energy from the Moon's orbit and turn it into kinetic energy in the oceans. What about magnets? How do they even work? Where does wind fit in? Sun's energy drives the wind. And a very tiny bit of extracting rotational energy from the Earth, which came the way the Moon's rotational energy did.
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Post by mikegarrison on Sept 21, 2021 17:54:06 GMT -5
It is no coincidence that, looking down from the "north", the sun rotates counter-clockwise, all the planets orbit counter-clockwise, most moons orbit counter-clockwise, and most planets (all except Venus and Uranus) spin counter-clockwise. The dust cloud that formed the solar system was swirled, and it happened to be swirling in that direction.
Venus spins very slightly clockwise, and Uranus is spinning "on its side".
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