07-02-2009, 02:12 PM
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Member
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Join Date: Mar 2008
Location: Brisbane, Australia.
Posts: 50
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See Seebeck effect
Quote:
Originally Posted by J_Player
3. Do you think the IR LED detector is sensing the difference in temperature from a buried metal object, or do you think it is sensing something different, such as might be caused by an anomaly of the magnetic field, or electric field, or maybe disturbances in other energies?
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Google: Seebeck effect
Aurificus
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The simplest answer to a complex problem.... is invariably wrong! 
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