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Cake day: June 28th, 2023

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  • Strictly speaking, the energy it consumes is the gravitational potential energy of the ore they’re mining, which would be consumed anyway in the form of, well, gravity, acting on the ore on the way down. They’re just using it productively instead of dissipating it as heat from the brakes. Using only energy that ordinarily would have been wasted is of course very neat, but it’s not breaking any laws of physics.

















  • Ultraviolet@lemmy.worldtoScience Memes@mander.xyzHalf as Hot
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    20 days ago

    90 F to Kelvin, halved and converted back, is approximately -190.

    It’s difficult to find data on what exposure to that temperature would do, the threshold for an extreme cold warning (meaning absolutely do not go outside without heavy protection unless you want necrotic frostbite) is about 150 F warmer than that.