Harvey Fletcher

Harvey Fletcher (September 11, 1884 - July 23, 1981) was an American physicist. He was credited with the invention of the hearing aid and the audiometer.

Related Topics:
September 11 - 1884 - July 23 - 1981 - American - Physicist - Hearing aid - Audiometer

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Fletcher was born in Provo, Utah, and was educated at Brigham Young University (BYU).

Related Topics:
Provo - Utah - Brigham Young University

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As a graduate student, his dissertation research was the now famous Millikan oil drop experiment to measure the charge of the electron. He carried this out under the direction of Robert Millikan. Millikan went on to win the 1923 Nobel Prize for Physics, in part for this work.

Related Topics:
Millikan oil drop experiment - Electron - Robert Millikan - 1923 - Nobel Prize for Physics

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Fletcher is sometimes known as "the father of stereophonic sound", but this is inaccurate. His technique relied on spaced pairs of microphones. Modern stereo, based primarily on coincident techniques, was conceived by Alan Blumlein of EMI at about the same time and aimed to overcome the deficiencies in Fletcher's method. Blumlein applied for the key patent in this field in 1931.

Related Topics:
Stereophonic sound - Alan Blumlein - EMI

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Fletcher was the Founding Dean of the BYU College of Engineering.

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He died on July 23, 1981, after a strokehttp://historytogo.utah.gov/utachiev.html.

Related Topics:
July 23 - 1981 - Stroke

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