How do motion sensors work?

Name: How do motion sensors work?
Uploaded: 2011-12-12T20:52:46+00:00
Channel: Brain Stuff
Description: There are many kinds of motion sensors, from active to passive systems. Get the scoop on how myriad motion sensing systems work in this podcast from HowStuffWorks.com.

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There are many kinds of motion sensors, from active to passive systems. Get the scoop on how myriad motion sensing systems work in this podcast from HowStuffWorks.com.

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