# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/j-b-gunn
# Generated: 2026-08-14T00:08:21.029Z

schema: https://schema.org/Person
url: "https://fame.am/person/j-b-gunn"
name: "J. B. Gunn"
slug: "j-b-gunn"
description: "John Battiscombe \"J. B.\" Gunn, known as Ian or Iain, was a British physicist, who spent most of his career in the United States. He discovered the Gunn effect, which led to the invention of the Gunn diode, the first inexpensive source of microwave power that did not require vacuum tubes. He was born John Battiscombe Gunn, but only used that name in legal documents."
tagline: "British physicist, discoverer of the Gunn effect (1928–2008)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Gunn's_Group_c.JPG?width=1200"
gender: "male"
country:
  name: "United Kingdom"
  isoCode: "GB"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1928-05-13"
deathDate: "2008-12-02"
livingStatus: "DECEASED"
scores:
  popularity:           40.27
  momentum:             0
  historical:           8.074694666666666
  currentAttention:     0
  sourceConfidence:     50.00000000000001
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://uk.wikipedia.org/wiki/%D0%94%D0%B6%D0%BE%D0%BD_%D0%91%D0%B0%D1%82%D1%82%D1%96%D1%81%D0%BA%D0%BE%D0%BC%D0%B1_%D2%90%D0%B0%D0%BD%D0%BD"
    title: "Джон Баттіскомб Ґанн"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D8%AC%DB%8C_%D8%A8%DB%8C_%D9%82%D8%A7%D9%86"
    title: "جی بی قان"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/John_Battiscombe_Gunn"
    title: "John Battiscombe Gunn"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/J._B._Gunn"
    title: "J. B. Gunn"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%AC%DB%8C_%D8%A8%DB%8C_%DA%AF%D8%A7%D9%86"
    title: "جی بی گان"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/John_Battiscombe_Gunn"
    title: "John Battiscombe Gunn"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/John_Battiscombe_Gunn"
    title: "John Battiscombe Gunn"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/John_Battiscombe_Gunn"
    title: "John Battiscombe Gunn"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%93%D0%B0%D0%BD%D0%BD%2C_%D0%94%D0%B6%D0%BE%D0%BD"
    title: "Ганн, Джон"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q710883"
    title: "Wikidata"
    type:  "WIKIDATA"

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