• 2 Posts
  • 33 Comments
Joined 1 year ago
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Cake day: December 14th, 2023

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  • When you push something you push the atoms in the thing. This in turn pushes the adjacent atoms, when push the adjacent atoms all the way down the line. Very much like pushing water in the bathtub, it ripples down the line. The speed at which atoms propogate this ripple is the speed of sound. In air this is roughly 700mph, but as the substance gets harder* it gets faster. For example, aluminum and steel it is about 11,000mph. That’s why there’s a movie trope about putting your ear to the railroad line to hear the train.

    If you are talking about something magically hard then I suppose the speed of sound in that material could approach the speed of light, but still not surpass it. Nothing with mass may travel the speed of light, not even an electron, let alone nuclei.

    *generalizing

















  • My city is nestled between a rain forrest and lots of natural springs. If we put our water through the normal cleaning process it would come out dirtier then it went it. We also have a few damned lakes we are having to release water from because we got so much damned rain this past winter.

    We have a flat rate we pay for water, sewage, recycling, and garbage pickup and are only charged more if we use a certain amount of water. Mostly just people who water their yard or have a personal pool have to pay the higher fee.