Thread: smoke alarms
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Old May 8th, 2008, 07:01 AM
Mortis13's Avatar
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Join Date: Apr 2008
Location: Johannesburg, South Africa
Posts: 52
Default Re: smoke alarms

Some detectors also use a chamber that is filled by particles by a source of radiation, the particles conduct a current through the chamber. When smoke enters, it absorbs some of the particles, and the current is interrupted, setting off the alarm.

I hope that this helps.
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