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Cake day: July 4th, 2022

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  • I don’t remember all of the details, but I thought it was essentially the water’s surface tension that foots the energy bill when climbing a paper towel or a capillary in a tree.

    The surface of fluids like water are unhappy. Molecules on the surface would much rather be deep in the fluid because on the surface they have “dangling” Van der Waals & polar bonds to one side. You can calculate the potential energy of the surface due to all of those dangling weak bonds, & that’s the energy that is used to climb a capillary (the energy isn’t free).

    I could be misremembering though, I admit. School was many years ago…













  • GrappleHat@lemmy.mltoAsklemmy@lemmy.mlComplexity
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    3 months ago

    The part you remember was not about eating the animal due to hunger. He was observing that when he was away from “civilization” for long enough he noticed that he started to think in a more primal way. In that case, it was tearing a squirrel to shreds raw with his teeth! (or something) :)