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...
Ann Cooper Hewitt (1914–1956) was a wealthy American heiress who was sterilized against her will in California in 1935.
Cooper Hewitt, Smithsonian Design Museum is a design museum at the Andrew Carnegie Mansion in Manhattan, New York City, along the Upper East Side's Museum Mile. It is one of nineteen Smithsonian Institution museums and one of three Smithsonian...
Abram Stevens Hewitt (July 31, 1822 – January 18, 1903) was an American politician, educator, ironmaking industrialist, and lawyer who was mayor of New York City for two years from 1887 to 1888. He also twice served as a U.S. Congressman from New...
Peter Cooper (February 12, 1791 – April 4, 1883) was an American industrialist, inventor, philanthropist, and politician. He designed and built the first American steam locomotive, the Tom Thumb, founded the Cooper Union for the Advancement of...
Peter Cooper (1791–1883) was an American industrialist, inventor and philanthropist.
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode...
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, to produce ultraviolet and make a phosphor coating in...
