# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/greenleaf-whittier-pickard
# Generated: 2026-08-14T07:11:03.885Z

schema: https://schema.org/Person
url: "https://fame.am/person/greenleaf-whittier-pickard"
name: "Greenleaf Whittier Pickard"
slug: "greenleaf-whittier-pickard"
description: "Greenleaf Whittier Pickard was an American electrical engineer and inventor. He was largely responsible and most famous for the development of the crystal detector, the earliest type of diode detector, although he was not the earliest discoverer of the rectifying properties of contact between certain solid materials. The crystal detector was the central component in many early radio receivers from around 1906 until about 1920. Pickard also experimented with antennas, radio wave propagation and noise suppression."
tagline: "American radio pioneer (1877–1956)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Greenleaf_Whittier_Pickard_in_his_Boston_laboratory.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: "1877-02-14"
deathDate: "1956-01-08"
livingStatus: "DECEASED"
scores:
  popularity:           41.97
  momentum:             0
  historical:           10.67573866666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://ur.wikipedia.org/wiki/%DA%AF%D8%B1%DB%8C%D9%86_%D9%84%DB%8C%D9%81_%D9%88%D8%A7%D8%A6%D9%B9%DB%8C%D8%A6%D8%B1_%D9%BE%DB%8C%DA%A9%D8%A7%D8%B1%DA%88"
    title: "گرین لیف وائٹیئر پیکارڈ"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%BA%D8%B1%D9%8A%D9%86%D9%84%D9%8A%D9%81_%D9%88%D9%8A%D8%AA%D8%AA%D9%8A%D8%B1_%D8%A8%D9%8A%D9%83%D8%A7%D8%B1%D8%AF"
    title: "غرينليف ويتتير بيكارد"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Greenleaf_Whittier_Pickard"
    title: "Greenleaf Whittier Pickard"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Greenleaf_Whittier_Pickard"
    title: "Greenleaf Whittier Pickard"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Greenleaf_Whittier_Pickard"
    title: "Greenleaf Whittier Pickard"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Greenleaf_Whittier_Pickard"
    title: "Greenleaf Whittier Pickard"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Greenleaf_Whittier_Pickard"
    title: "Greenleaf Whittier Pickard"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%82%B0%E3%83%AA%E3%83%BC%E3%83%B3%E3%83%AA%E3%83%BC%E3%83%95%E3%83%BB%E3%83%9B%E3%82%A4%E3%83%83%E3%83%86%E3%82%A3%E3%82%A2%E3%83%BB%E3%83%94%E3%82%AB%E3%83%BC%E3%83%89"
    title: "グリーンリーフ・ホイッティア・ピカード"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Greenleaf_Pickard"
    title: "Greenleaf Pickard"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Greenleaf_Whittier_Pickard"
    title: "Greenleaf Whittier Pickard"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9F%D0%B8%D0%BA%D0%BA%D0%B0%D1%80%D0%B4%2C_%D0%93%D1%80%D0%B8%D0%BD%D0%BB%D0%B8%D1%84_%D0%A3%D0%B8%D1%82%D1%82%D0%B5%D1%80"
    title: "Пиккард, Гринлиф Уиттер"
    type:  "WIKIPEDIA"
  - url: "https://uk.wikipedia.org/wiki/%D0%93%D1%80%D1%96%D0%BD%D0%BB%D1%96%D1%84_%D0%92%D1%96%D1%82%D1%82%D0%B5%D1%80_%D0%9F%D1%96%D0%BA%D0%B0%D1%80%D0%B4"
    title: "Грінліф Віттер Пікард"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q1544764"
    title: "Wikidata"
    type:  "WIKIDATA"

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