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If we're playing that game: - Human muscles get energy from food. - Food is or gets its energy from plants. - Plants get energy from the Sun. - The Sun's en
by mdturnerphys 11y ago
If we're playing that game:
- Human muscles get energy from food.
- Food is or gets its energy from plants.
- Plants get energy from the Sun.
- The Sun's energy comes from gravity-forced fusion.
So gravity :)
- ajuc 11y agoGood point, but it's not the end. Fusion uses up energy put there by the Big Bang :)
- brianpan 11y agoThe Big Bang came from....gravity?
- ajuc 11y agoIs this the science consensus? I thought it's one of competing unconfirmed theories?
- jheriko 11y agoi believe it is very much the consensus. the FLRW model of cosmology, which has made numerous confirmed predictions teaches us that the big bang is a geometric property of space-time i.e. a consequence gravity, and particularly Einstein's field equation from general relativity.
- dear 11y agoSo by your logic fossil fuel is solar energy.
- andrewstuart2 11y agoBy causality, it kinda is.
- mikepurvis 11y agoIt is, it's just massively time-shifted. It's interesting to put that in perspective: the pyramids were built out of solar energy by way of muscle. Skyscrapers are built out of solar energy mostly by way of diesel fuel.
- benihana 11y agoIt is. Except for geothermal energy brought on by radioactive decay, all energy on earth originally comes from the sun. Fossil fuel is sunlight that was absorbed by plants which then either decomposed into fuel over millions of years, or were eaten by animals which later decomposed into fuel over millions of years. Our cars are powered by very old, stored sunlight.
- zebra 11y agoAnd radioactive elements come from long dead suns, so all energy on earth originally comes from A sun.
- CodeWriter23 11y agoYou are now qualified to take a job as an oil company or nuclear energy lobbyist.
- jodrellblank 11y agoFossil fuel is a solar battery; charged in a couple hundred million years, humans will drain it in ~500. No wonder we're seeing exponential growth with that injection of stored energy into society. The industrial revolution is a coal-powered nitro.
- haxiomic 11y agoCheckout this explanation of fire by Richard Feynman - its a really eye opening perspective https://www.youtube.com/watch?v=N1pIYI5JQLE https://www.youtube.com/watch?v=N1pIYI5JQLE He explains the light of a fire is just the light of the Sun, it's just been stored in the wood
- rcthompson 11y agoStars are the original GravityLight.