Peter Cooper Hewitt Scientist

Peter Cooper Hewitt (May 5, 1861 – August 25, 1921) was an American electrical engineer and inventor, who invented the first mercury-vapor lamp in 1901. Hewitt was issued U.S. Patent 682,692 on September 17, 1901. In 1903, Hewitt created an improved version that possessed higher colour qualities which eventually found widespread industrial use.

Personal facts

Birth date	May 05, 1861
Birth place	New York City
Nationality	United States
Date of death	August 25, 1921
Education	Columbia School of Engineering and Applied Science
Known for	Arc lamp Mercury-arc valve