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leonwzwodowiec 6 year s ago
#17 "The super strong material that’s 7.5 times lighter than air" vs "it’s only 1.5 times denser than air". If it would be lighter than air it would float in air like baloon with hel.
       
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This substance is called sodium acetate, and it turns from a liquid into crystals when the slightest influence is exerted upon it. Outwardly, it can’t be distinguished from ordinary water ice — it even produces similar surface patterns. Yet it’s actually warm. This is the substance that is hidden inside chemical heat pads.

 

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Science Has Created All Sorts Of Unbelievable Materials (12 pics + 10 gifs)
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