25 Nov Researchers at the ETH in Zurich have made the lightest gold ever 98 percent of it is made from protein fibers derived from milk just 2 25 Nov This is the least dense gold nugget in the entire world It can be held up with a feather And it s supported by a space age material often dubbed
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30 Nov Gold nanoparticle aerogel is a thousand times lighter than solid goldGolden العبور 10 lik الاسفنج الصناعى والمراتب والمفروشات
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