• @Donjuanme@lemmy.world
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    117 days ago

    Along with the people pointing out conductivity.

    Who says water is not compressible? Takes a lot of energy, but the big bang didn’t happen in a sea of water.

    • Brave Little Hitachi Wand
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      117 days ago

      My oceanography textbook said so. You’d think the ocean people knew about water. Must be more propaganda from big compress to sell more compression.

      • @Donjuanme@lemmy.world
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        17 days ago

        Yeah, it’s been 15 years since I’ve taken oceanography, but the density of water is determined by its temperature.

        • Brave Little Hitachi Wand
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          57 days ago

          Density is certainly changeable in water with temperature, but density isn’t exactly the same thing as compression.

          TIL A waterjet cutter pressurizes the water to something like 90,000 psi and it gets about 14% more dense. I always thought those things just had the water highly pressurised, but not actually compressed.

          • @Donjuanme@lemmy.world
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            37 days ago

            I want to posit that because water isn’t compressible at forces we experience commonly, it doesn’t mean it isn’t compressible. For 99.999% of the water rules we concern ourselves with water should be considered incompressible, but there are exceptions to every rule

    • @sga@lemmings.world
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      67 days ago

      most solids and liquids are practically incompressible (when comparing with gasses). there is a relationship between bulk compressibility, shear stress and youngs modulus for solids, which can be extended for liquids. It does not work for gasses