• blandfordforever@lemm.ee
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      1 day ago

      The surface area of the box is about 135 inches. If this surface area were spread over a sphere, it would have a diameter of about 6.5 inches and a volume of nearly 150 cubic inches (nearly twice the volume of the uninflated box!). 150 cubic inches of osmium weighs about 120lbs.

      So, indeed you could exceed the weight limit of the box by ballooning it out and filling it with something that’s at least 7/12ths as dense as osmium (or a little more dense than lead).

    • LostXOR@fedia.io
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      1 day ago

      Hmm, that might make it feasible to do with something that you can actually buy in large quantities, like tungsten! Would still probably cost four or five figures though.