This hot tub filled with fluidised sand is what you need to see today

We all knew science was cool, we just didn’t know how cool.

YouTuber Mark Rober demonstrated how adding air to sand in a certain way causes the sand to look and act like a fluid. The next logical step was to fill a hot tub with the stuff.

Not only does this video teach you about industrial application of science (fun!) — you also get to watch him giving his nephews a fright when he hides under the sand only to burst out.

Science!

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