# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/h-j-round
# Generated: 2026-08-13T05:49:18.153Z

schema: https://schema.org/Person
url: "https://fame.am/person/h-j-round"
name: "H. J. Round"
slug: "h-j-round"
description: "Captain Henry Joseph Round was an English engineer and one of the early pioneers of radio. He was the first to report the observation of electroluminescence from a solid state diode, leading to the discovery of the light-emitting diode. He was a personal assistant to Guglielmo Marconi."
tagline: "British inventor (1881–1966)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/HJ_Round.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: "1881-06-02"
deathDate: "1966-08-17"
livingStatus: "DECEASED"
scores:
  popularity:           43.89
  momentum:             5.242718446601942
  historical:           5.484054666666667
  currentAttention:     0
  sourceConfidence:     35
  profileCompleteness:  70
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://en.wikipedia.org/wiki/H._J._Round"
    title: "H. J. Round"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Henry_Joseph_Round"
    title: "Henry Joseph Round"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Henry_Joseph_Round"
    title: "Henry Joseph Round"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/H._J._Round"
    title: "H. J. Round"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Henry_Joseph_Round"
    title: "Henry Joseph Round"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Henry_Round"
    title: "Henry Round"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q1606934"
    title: "Wikidata"
    type:  "WIKIDATA"

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