I didn't do itChthonic wants to know about awful, terrible things you have definitely never done. But secretly have. Confess!
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Scaryduck LIKES EGG, Thu 15 Sep 2011, 13:16)
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Liquid heliumis an awful good way of making high (if not very extreme) vacuums. Cryopumping, it's called. ah, happy days and great fun.
(, Wed 21 Sep 2011, 16:35, Reply)
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