Sulfur hexafluoride. 5.11 times as dense as air. Freaky!
“Any sufficiently advanced technology is indistinguishable from magic.” – Arthur C. Clarke, Clarke’s three laws
via BoingBoing
Sulfur hexafluoride. 5.11 times as dense as air. Freaky!
“Any sufficiently advanced technology is indistinguishable from magic.” – Arthur C. Clarke, Clarke’s three laws
via BoingBoing
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