Lie Detector History

Lie Detector History
https://engineers-channel.blogspot.com/p/inventions.html

The first polygraph or lie detector was created in 1921, when a California-based policeman and physiologist John A. Larson devised an apparatus to simultaneously measure continuous changes in blood pressure, heart rate and respiration rate in order to aid in the detection of deception.

Magnetic Mind Control
https://engineers-channel.blogspot.com/p/magnetic-mind-control.html