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sarahingram | 21:10 Wed 04th Feb 2009 | How it Works
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How do laser detectors work
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Avatar Image tigersam258
they pick up on reflected light. when it recognises list at the same wavelength that the unit emitted, it recognises this as a 'target'

most of the time these are infra red i.e. undetectable to the naked eye such as those magic lights that turn on when someone approaches.

16:28 Thu 05th Feb 2009

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