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Re: A couple of questions for all you CD demagnetists out there.

''the static electricity generated by spinning polycarbonate plastic through the air.''

Hilarious.

There actually is something to that. "Friction" with air can indeed produce a static charge on plastics such as polycarbonate. If you have a vacuum with a plastic hose you can demonstrate this for yourself. Use the hair on your arm to compare the static attraction to the hose when the vacuum is off and again when it's been running for a bit.

Of course the air velocities in a vacuum cleaner hose are considerably greater than what a spinning CD will encounter, but it does demonstrate that the effect is very real.

Air is pretty much right at the top or positive end of the triboelectric series which means that it more easily gives up electrons. Polycarbonate (along with most other plastics) is near the bottom or negative end which means that it does a good job of gaining electrons.

The farther apart in the triboelectric series two materials are, the more efficiently charge is transfered when they come into contact and are separated.

se





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