The Polygraph: The Proto-Photocopy Machine Machine Invented in 1803 That Changed Thomas Jefferson’s Life
openculture.com
The Polygraph: The Proto-Photocopy Machine Machine Invented in 1803 That Changed Thomas Jefferson’s Life
Today we associate the word polygraph mainly with the devices we call 'lie detectors.' The unhidden Greek terms from which it originates simply mean 'multiple writing,' which seems apt enough in light of all those movie interrogation scenes with their juddering parallel needles.
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