Off topic but interesting?? Magnetics

From: Mike Ford <mikeford_at_socal.rr.com>
Date: Mon Nov 6 18:22:17 2000

> Sold a pair of old Jensen speakers to a guy in Korea the other day and
>am shipping them via DHL Worldwide. They have refused to accept the
>items until I come up with a "gauss reading" for the magnetic field????
> Anyone ever heard of such a thing? I did a fair bit of research and
>found their maximum allowable reading is ".00525" but no one at DHL has
>a clue what that means. I'm assuming it is a measurement in gauss at
>some prescribed distance from the package. On average the strength of
>most high powered speaker magnets is in the range of 10,000 to 15,000
>gauss,
>but that is measured at the voice coil [in the center of the field]. The
>field would decrease [as the square or maybe even the cube] of the
>distance.
> Stumped,
> Craig

They must mean the field as measured at the outside of the packing,
otherwise no hard drive could be shipped with super powerfull magnets used
in the head positioners.
Received on Mon Nov 06 2000 - 18:22:17 GMT