Tuesday, April 2, 2013

Aerogel - "twice as heavy as hydrogen, 7.5 times lighter than air" (link)

TYWKIWDBI ("Tai-Wiki-Widbee"): An aerogel "twice as heavy as hydrogen" (??): Aerogels are truly amazing structures.  The one pictured above (reported in Nature ) resting on an inflorescence of grass is described a...
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