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'[OT] Power from Piezos'
1998\12\07@212419 by Donald L Burdette

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I recall that shortly after the introduction of the LED sneakers, the
manufacturer (Nike?) pulled them from shelves and redesigned them because
of the outrage over mercury in them.  I think there was a hazardous waste
disposal problem.  My guess is that the stuff in the glass ampule is not
mercury.  Anyway, what kind of manufacturing process could contaminate
the mercury so thoroughly as to make it unrecognizable?

1998\12\07@222702 by Dave VanHorn

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At 09:22 PM 12/7/98 -0500, Donald L Burdette wrote:
>I recall that shortly after the introduction of the LED sneakers, the
>manufacturer (Nike?) pulled them from shelves and redesigned them because
>of the outrage over mercury in them.  I think there was a hazardous waste
>disposal problem.  My guess is that the stuff in the glass ampule is not
>mercury.  Anyway, what kind of manufacturing process could contaminate
>the mercury so thoroughly as to make it unrecognizable?


It wasn't unrecognizable, just very dirty. It was definitely mercury.

1998\12\08@110319 by Peter L. Peres

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On Mon, 7 Dec 1998, Donald L Burdette wrote:

> disposal problem.  My guess is that the stuff in the glass ampule is not
> mercury.  Anyway, what kind of manufacturing process could contaminate
> the mercury so thoroughly as to make it unrecognizable?

Cheap electrodes that amalgamate with mercury ;)

Peter

1998\12\08@124453 by John Payson

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|I recall that shortly after the introduction of the LED sneakers, the
|manufacturer (Nike?) pulled them from shelves and redesigned them because
|of the outrage over mercury in them.  I think there was a hazardous waste
|disposal problem.  My guess is that the stuff in the glass ampule is not
|mercury.  Anyway, what kind of manufacturing process could contaminate
|the mercury so thoroughly as to make it unrecognizable?

>From what I read, the Nike shoes used batteries to power the LED's,
and the batteries used contained much more mercury than the alkalines
produced by most vendors today.  The mercury in question was not,
AFAIK, uncombined elemental mercury (which is simultaneously very cool
and very nasty), but instead took the form of mercury salts which are
not discernable from any other kind without chemical analysis.

I'd never heard anything about the shoes using Peizos, though I guess
such a thing would be possible.

1998\12\08@142139 by Peter L. Peres
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On Tue, 8 Dec 1998, John Payson wrote:

> I'd never heard anything about the shoes using Peizos, though I guess
> such a thing would be possible.

Hmm. This reminds me of *piezo gas lighters*. How about shoes that jolt
you if you sweat and walk ? ;) Come to think of it, putting a jolting
device in things that punks destroy be kicking etc in public places may be
a good idea ;) It would take a few hits to get it but the Pavlov effect
should work eventually <g>.

Peter

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