Re: But MyffyW ...
... that's all silicone, not silicon.
Silicone is a polymer constructed from a chain of alternating silicon and oxygen atoms - without the silicon, you'd just have some oxides. Apart from Bulgarian airbags, silicon is a major constituent of all sorts of other useful things - pottery, glass, concrete, aluminium-silicon castings (like engine blocks) and, of course, golden beaches.
Biting the hand that feeds IT
