NEW VIDEO where I built a fluidized air bed in a hot tub with sand and then tested the principles of buoyancy with my nephews... by throwing them in. https://goo.gl/gvJrDy | Mark Rober
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NEW VIDEO where I built a fluidized air bed in a hot tub with sand and t…
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This guy put fluidised sand in a hot tub and it is utterly mesmerising
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Engineer Mark Rober Creates a Liquid Sand Hot Tub
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