World's Lightest Solid!
Aerogels are the world's lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission. The focus of this video is silica aerogels, though graphene aerogels are now technically the lightest.
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2. Judge-Jake commented 5 years ago
You can actually buy little pieces of this stuff www.buyaerogel.com if you are curious.
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3. thundersnow commented 5 years ago
All I see is Derek Muller .....but of course he's taken....
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+2 1. ringmaster commented 5 years ago
What the video did not show us was the potential medical use.