Simple Lie Detector


Posted on Feb 6, 2014

Here`s a simple lie detector that can be built in a few minutes, but can be incredibly useful when you want to know if someone is really telling you the truth. It is not as sophisticated as the ones the professionals use, but it works. It works by measuring skin resistance, which goes down when you lie. 2. To use the circuit, attach the electrodes


Simple Lie Detector
Click here to download the full size of the above Circuit.

to the back of the subjects hand, about 1 inch apart. Then, adjust the meter for a reading of 0. Ask the questions. You know the subject is lying when the meter changes.




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