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A Polygraph is a duplicating device that produces a copy of a piece of writing simultaneously with the creation of the original, using pens and ink. Patented by John Isaac Hawkins on May 17, 1803, it was most famously used by the third U.S. president, Thomas Jefferson , who acquired his first polygraph in 1804 and later suggested improvements ...
Leonarde Keeler (October 30, 1903 – September 20, 1949) was an American inventor best known for co-inventing the polygraph.He was named after the polymath Leonardo da Vinci, and preferred to be called Nard.
American inventor Leonarde Keeler testing his improved polygraph on Arthur Koehler, a former witness for the prosecution at the 1935 trial of Richard Hauptmann. A polygraph, often incorrectly referred to as a lie detector test, [1] [2] [3] is a pseudoscientific [4] [5] [6] device or procedure that measures and records several physiological indicators such as blood pressure, pulse, respiration ...
The American Polygraph Association (APA) is a professional association of polygraph examiners. It was established in 1966. It has about 2,800 members. The organization offers its members publications and conferences related to polygraphy, as well as employment services and public referrals for its members.
John Augustus Larson (11 December 1892 – 1 October 1965) was a police officer and forensic psychiatrist and became famous for his invention of the modern polygraph device used in forensic investigations. [1] He was the first American police officer with an academic doctorate and to use the polygraph in criminal investigations.
Interactive geometry software (IGS) or dynamic geometry environments (DGEs) are computer programs which allow one to create and then manipulate geometric constructions, primarily in plane geometry. In most IGS, one starts construction by putting a few points and using them to define new objects such as lines , circles or other points.
In mathematics, and particularly in category theory, a polygraph is a generalisation of a directed graph. It is also known as a computad . They were introduced as "polygraphs" by Albert Burroni [ 1 ] and as "computads" by Ross Street .