Keelers Lie Detector
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Keelers Lie Detector
Leonard Keeler, of North Western University, USA, invents a lie detector based on blood pressure Date: 1937
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Media ID 7113347
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10052314
Based Blood Detector Detectors Instruments Invents Keeler Leonard Pressure University 1937
EDITORS COMMENTS
This photograph captures the historic moment when Leonard Keeler, a brilliant American psychophysicist from Northwestern University, unveiled his groundbreaking invention, the Keeler Lie Detector, in 1937. Keeler's innovation represented a significant leap forward in the realm of scientific deception detection. Based on the principle that lying increases heart rate and blood pressure, Keeler's lie detector was the first to employ inflatable cuffs to measure changes in blood pressure. The image shows Keeler, dressed in a formal suit and holding a microphone, addressing an attentive audience. Surrounding him are various scientific instruments and equipment, including the lie detector itself, which appears as a large, intricate machine with numerous dials and tubes. The room is filled with a palpable sense of excitement and anticipation, as Keeler prepares to demonstrate the capabilities of his invention. The Keeler Lie Detector marked a turning point in the development of modern polygraph testing, paving the way for more sophisticated and reliable methods of detecting deception. Although the technology has faced controversy and criticism throughout its history, it remains an essential tool in various fields, including law enforcement, national security, and human resources. This photograph is a testament to the ingenuity and curiosity of the human mind, as well as the relentless pursuit of knowledge and truth. It serves as a reminder of the transformative power of scientific discovery and the profound impact it can have on society.
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