1903 - 1949
Leonarde Keeler American Inventor
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Leonarde Keeler is a member of the following lists: 1903 births, American inventors and 1949 deaths.
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Details
| First Name |
Leonarde
|
| Last Name |
Keeler
|
| Birthday |
30th November, 1902
|
| Birthplace |
North Berkeley, California
|
| Died |
1949
|
| Place of Death |
Door County, Wisconsin
|
| Nationality |
American
|
| Occupation Text |
Detective, inventor
|
| Occupation |
Inventor
|
Leonarde Keeler (October 30, 1903 – September 20, 1949) was the co-inventor of the polygraph. He was named after the polymath Leonardo da Vinci, and preferred to be called as 'Nard.' He was a Berkeley high school student and amateur magician. He was captivated by John Larson's machine - his so-called 'cardio-pneumo psychogram,' capable of detecting deception, and worked on it to produce the modern polygraph.
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