At 12:41 PM 7/16/2003 +1000, John Wheeler wrote:
>G'day Zuiks,
>
>I know this is OT but can anybody on the list kindly explain the workings of
>these devices? I know that a vertical rod dislodges a spring wire at the
>base of the unit which then strikes the lower end of the bulb thus causing
>the bulb to ignite. What puzzles me is that there is apparently no
>electrical circuitry involved leading me to think that there must be a
>chemical reaction/explosion taking place. Am I on the right track?
I always thought that they were either chemical or piezoelectric. Dunno. I
wonder about the reliability and timing of the chemical possibility, but then I
remember that quite a few of the bulbs actually mis-fired...
Garth
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