Main Page | See live article | Alphabetical index Harvey Fletcher (September 11, 1884 - July 23, 1981) was an American physicist, known as "the father of stereophonic sound", and credited with the invention of the hearing aid and the audiometer. He was born in Provo, Utah, and was educated at Brigham Young University (BYU). 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. Fletcher was the Founding Dean of the BYU College of Engineering. He died on July 23, 1981, after a stroke[1]. External links "In Memory of Harvey Fletcher" - a brief biography and collection of links This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.