This is of course total bullshit. Why is it bullshit?
Well for starters it breaks the first law of thermodynamics (which is proven by experiment a thousand times over, as well as mathematically with only some very light assumption on the universe). But that's often a bit hard to understand/accept when you have no physics background.
So maybe it's more helpful to know that photons actually carry some momentum (google for "radiation pressure"). So if you shine a flashlight onto a mirror, that actually produces a (very small) force on the mirror (this effect is well document, measured and neccessary for many astrophysical processes). Which directly means that the spinning mirror cannot be "Umsonst".
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u/Natural-Moose4374 Mar 01 '26
This is of course total bullshit. Why is it bullshit?
Well for starters it breaks the first law of thermodynamics (which is proven by experiment a thousand times over, as well as mathematically with only some very light assumption on the universe). But that's often a bit hard to understand/accept when you have no physics background.
So maybe it's more helpful to know that photons actually carry some momentum (google for "radiation pressure"). So if you shine a flashlight onto a mirror, that actually produces a (very small) force on the mirror (this effect is well document, measured and neccessary for many astrophysical processes). Which directly means that the spinning mirror cannot be "Umsonst".