# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/harvey-fletcher
# Generated: 2026-08-14T09:36:34.590Z

schema: https://schema.org/Person
url: "https://fame.am/person/harvey-fletcher"
name: "Harvey Fletcher"
slug: "harvey-fletcher"
description: "Harvey Fletcher 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. He was an investigator into the nature of speech and hearing, and made contributions in acoustics, electrical engineering, speech, medicine, music, atomic physics, sound pictures, and education. Following his death, he was credited with collaborating with his doctoral advisor, Robert Millikan, on the Nobel-prize winning oil drop experiment which first determined the charge of the electron."
tagline: "American physicist (1884-1981)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Harvey_Fletcher_1914_Banyan.PNG?width=1200"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1884-09-11"
deathDate: "1981-07-23"
livingStatus: "DECEASED"
scores:
  popularity:           47.06
  momentum:             0
  historical:           14.42556
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://zh.wikipedia.org/wiki/%E5%93%88%E7%B6%AD%C2%B7%E7%A6%8F%E8%90%8A%E6%9F%B4%E7%88%BE"
    title: "哈維·福萊柴爾"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D9%87%D8%A7%D8%B1%D9%81%D9%8A_%D9%81%D9%84%D9%8A%D8%AA%D8%B4%D8%B1"
    title: "هارفي فليتشر"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%87%D8%A7%D8%B1%D9%81%D9%89_%D9%81%D9%84%D9%8A%D8%AA%D8%B4%D8%B1"
    title: "هارفى فليتشر"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D9%87%D8%A7%D8%B1%D9%88%DB%8C_%D9%81%D9%84%DA%86%D8%B1"
    title: "هاروی فلچر"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%87%D8%A7%D8%B1%D9%88%DB%8C_%D9%81%D9%84%DA%86%D8%B1"
    title: "هاروی فلچر"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%8F%E3%83%BC%E3%83%B4%E3%82%A7%E3%82%A4%E3%83%BB%E3%83%95%E3%83%AC%E3%83%83%E3%83%81%E3%83%A3%E3%83%BC"
    title: "ハーヴェイ・フレッチャー"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://tr.wikipedia.org/wiki/Harvey_Fletcher"
    title: "Harvey Fletcher"
    type:  "WIKIPEDIA"
  - url: "https://uk.wikipedia.org/wiki/%D0%93%D0%B0%D1%80%D0%B2%D1%96_%D0%A4%D0%BB%D0%B5%D1%82%D1%87%D0%B5%D1%80"
    title: "Гарві Флетчер"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q2568271"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump