Peter Cooper Hewitt

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Peter Cooper Hewitt

Birthdate:
Death: Died
Immediate Family:

Son of Abram Stevens Hewitt and Sarah Amelia Hewitt
Husband of Lucy Bond Hewitt
Brother of Edward Ringwood Hewitt; Sally Hewitt; Amelia Bowman Hewitt; Sarah Hewitt; Eleanor Gurnee Hewitt and 2 others

Managed by: Private User
Last Updated:

About Peter Cooper Hewitt

http://en.wikipedia.org/wiki/Peter_Cooper_Hewitt

Peter Cooper Hewitt (May 5, 1861 - August 25, 1921) was an American electrical engineer, who, together with German physicist Martin Leo Arons, demonstrated the mercury-vapor lamp for which he deposited a patent.

Early life

Hewitt was born in New York City, the son of New York City Mayor Abram Hewitt and the grandson of industrialist Peter Cooper. He was educated at the Stevens Institute of Technology and the Columbia University School of Mines.

Career

He fabricated a discharge lamp in a vapor of mercury heated by the current passing through the liquid phase. The lamp was started by tilting the tube to make contact between the two electrodes, with the liquid mercury located on one side at rest. The efficiency was much higher than incandescent lamps but the emitted light was of a bluish-green unpleasant color, which limited its practical use to specific professional areas, like photography where the color was not an issue at a time where films were black and white.

In 1902 Hewitt developed the first mercury arc rectifier, which was an efficient way of converting alternating current power to direct current for use in electric railways, industry, and high-voltage direct current (HVDC) power transmission In 1907 he developed and tested an early hydrofoil.

In 1916, Hewitt joined Elmer Sperry to develop the Hewitt-Sperry Automatic Airplane, one of the first successful precursors of the UAV.

Royal connection

He was married to Lucy Bond Work who was the sister of Frances Ellen Work. Frances was the great-grandmother of the late Diana, Princess of Wales.

-------------------- Peter Cooper Hewitt (May 5, 1861 - August 25, 1921) was an American electrical engineer, who, together with German physicist Martin Leo Arons, demonstrated the mercury-vapor lamp for which he deposited a patent.

Hewitt was born in New York City, the son of New York City Mayor Abram Hewitt and the grandson of industrialist Peter Cooper. He was educated at the Stevens Institute of Technology and the Columbia University School of Mines.

He fabricated a discharge lamp in a vapor of mercury heated by the current passing through the liquid phase. The lamp was started by tilting the tube to make contact between the two electrodes, with the liquid mercury located on one side at rest. The efficiency was much higher than incandescent lamps but the emitted light was of a bluish-green unpleasant color, which limited its practical use to specific professional areas, like photography where the color was not an issue at a time where films were black and white. In 1902 Hewitt developed the first mercury arc rectifier, which was an efficient way of converting alternating current power to direct current for use in electric railways, industry, and high-voltage direct current (HVDC) power transmission In 1907 he developed and tested an early hydrofoil. In 1916, Hewitt joined Elmer Sperry to develop the Hewitt-Sperry Automatic Airplane, one of the first successful precursors of the UAV.

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Peter Cooper Hewitt's Timeline

1861
April 5, 1861
1921
August 25, 1921
Age 60
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