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Old August 25th, 2008, 02:00 AM   #16
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Free Light

I've seen a fluorescent lighting tube strike up and glow when brought underneath a high voltage power transmission line. With energy costs going up the way they are, we'll soon be begging the power companies to route new lines over our houses!
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Old August 25th, 2008, 08:00 AM   #17
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Quote:
Originally Posted by Greg Boston View Post
Really? Then why did I used to have such a hard time prying the magnet packs from our aluminum sputtering machines off the stainless steel tables in the wafer fab. It was one of the favorite practical jokes from a fellow tech.

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You're right. I don't know what my brain was doing yesterday - too near the power line perhaps!
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Old August 25th, 2008, 10:43 AM   #18
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QUOTE: Originally Posted by John Miller
"just like stainless steel isn't magnetic though containing typically 70% iron."


It is likely that your stainless steel worktop was thin stainless sheet laid over a thicker steel substrate or at least some steel framing underneath.
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Old August 26th, 2008, 12:57 PM   #19
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I retract my retraction(!)

All of the stainless steel objects I use in my day job (high pressure fittings, pharmaceutical equipment) are all non-magnetic. Most are 316 or 316L SS.

In a strong enough field, materials such as aluminum become magnetic (e.g., within an MRI coil).
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Old September 2nd, 2008, 10:02 PM   #20
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If the magnetic field is strong enough the whole body becomes magnetic. However, that is not due to the iron in the blood but the atomic structure of hydrogen.

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Old September 4th, 2008, 04:11 PM   #21
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Makes me think about the movie A.I., near the end, when the mechas "wirelessly resurrected" the boy robot. I suppose art imitates life. Or is it the other way around?
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Old September 4th, 2008, 07:38 PM   #22
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Is anyone else worried about the sort of tumours something like this is probably going to cause. All the various microwave rays and other things we've got shooting into skulls from our shiny new iPhones and such are bad enough, but actual electricity?

Call me backwards, but I find this stuff a little unsettling.
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