Harvey Fletcher

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At a glance

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Science and technology

Knowledge cost

2

Influence

3

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3

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What Wikipedia says

Harvey Fletcher (September 11, 1884 – July 23, 1981) was an American physicist. Known as the "father of stereophonic sound", he is credited with the invention of the 2-A audiometer and an early electronic hearing aid.

Excerpt from the Wikipedia article “Harvey Fletcher”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Brigham Young University Banyan, Public domain, via Wikimedia Commons.