> > http://www.timesonline.co.uk/article/0,,3-2461295,00.html > > Oh, dear, out with the tinfoil hat, I mean aluminium helmet ... ;))))))) "In the mid-1960s the Bristol hum gained much attention. A group from London University studied the noise and recommended that those suffering from its effects wear a specially designed aluminium helmet" Reading that furrowed the old brow a bit. But to be fair, it was 60's science. Luckily it didn't become the fashion too. I could barely afford Levis, let alone a metal hat -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist