Subjects>Law & Government>Law Enforcement & Public Safety Agencies

What year did John Larson invent the lie detector?

Anonymous

∙ 12y ago

Updated: 7/28/2025

John Larson invented the modern polygraph, commonly known as the lie detector, in 1921. His work built on earlier devices and techniques to measure physiological responses associated with truthfulness and deception. Larson's invention marked a significant development in forensic science and criminal investigation.

AnswerBot

∙ 1w ago

What else can I help you with?

What year did Walter Jaeger invent the poison gas detector?

sorry, this section has not been edited yet

What year did John Fitch invent the steamboat?

1784

What year did john dunlop invent the pneumatic tire?

1887

What year did john kay invent the flying shuttle?

2002

What year did john pemberton invent coca cola?

1886

What year did john logie baird invent the television?

1925

What year did John Permanton invent the Coca-Cola?

1913

What year did John Leon invent Digital TV?

HE INVENTED IT IN 2OO7!

Did john standard invent the refrigerator?

No, John Standard did not invent the refrigerator. The man who invented the refrigerator was named Oliver Evans. He invented the fridge in the year of 1805.

What year did John Deere invent the first cast steel plow?

1837

What year did sir john harington invent the first flushed toilet?

1756

What year did John Logie Barid invent the television?

1926. Hope that helped