Playing In A Hot Tub Full Of Fluidized Sand

November 29, 2017


This is a video of Mark Rober discussing the physics of fluidized beds, "a physical phenomenon occurring when a quantity of a solid particulate substance is placed under appropriate conditions to cause a solid/fluid mixture to behave as a fluid." In this case, sand and air make the mixture act like a fluid (previously: the same phenomenon demonstrated on a much smaller scale). Science -- isn't it amazing? Although perhaps even more amazing is the deal I'm about to get on that warranty-voided hot tub.

Keep going for the video, but he does some small scale examples first, so skip to 3:10 if you don't feel like learning and just want to see the hot tub hijinx, then again to 7:20.

Thanks to TFM, who prefers hot tubs filled with the traditional scalding hot water.

  • Talon184

    I hate getting sand in my assorted cracks...but this looks so fun it might be worth it to hot glue them all shut and dive in!

  • Deksam

    Sand in all my crevasses... Not cool.

  • Perpetual Pizza

    Sounds like something a Bond villain would use to execute his prisoners.

  • Titty McNipplefondler

    Welp, I'm off to Craigslist to pick up one of those free hot tubs that are always on there.

  • MustacheHam

    I bet he came out with smoother skin from this fun dip. I mean it's fine grit sand, great for exfoliation.

    I wouldn't want to go in that hot tub of sand.
    I'd probably get it up my fufu.

  • TheQiwiMan
  • Gingerbread

    Even for science?

  • WhiteEagle2

    Sure would suck if the air ran out of that tank with your head under the surface.

  • Bling Nye

    Sounds like a murder mystery waiting to happen.

  • GeneralDisorder

    I really hate when I subscribe to a really cool YouTube channel only to find out that they practically never upload anything. So then you forget who the hell it is and get a notice and you're like "Who the fuck is this?"

    First world problems.

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