Re:iPhones are allergic to helium
by namibj on Wednesday October 31, 2018 @05:26AM
(#18344267)
Compare with aluminium coated foil. They don't deflate that fast.
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Or intestines of cattle.
https://en.wikipedia.org/wiki/Zeppelin
Early Zeppelins used rubberised cotton for the gasbags, but most later craft used goldbeater's skin, made from the intestines of cattle