# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/josef-stefan
# Generated: 2026-09-01T21:16:53.677Z

schema: https://schema.org/Person
url: "https://fame.am/person/josef-stefan"
name: "Josef Stefan"
slug: "josef-stefan"
description: "He found the law governing how much energy every hot object radiates — a relationship so fundamental it carries his name and underpins how we measure stars, engineer engines, and understand heat itself."
tagline: "Carinthian Slovene physicist, mathematician and poet (1835-1893)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Jozef_Stefan.jpg"
gender: "male"
country:
  name: "Austria"
  isoCode: "AT"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1835-03-24"
deathDate: "1893-01-07"
livingStatus: "DECEASED"
scores:
  popularity:           53.81
  momentum:             2.1
  historical:           22.53427466666667
  currentAttention:     11.66666666666667
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
tags:
  - name: "Scientists"
    slug: "scientists"
  - name: "Academic"
    slug: "academic"
  - name: "Mathematics"
    slug: "mathematics"
  - name: "Physics"
    slug: "physics"
  - name: "Poetry"
    slug: "poetry"
  - name: "Literature"
    slug: "literature"
  - name: "19th Century"
    slug: "19th-century"
sources:
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    title: "Wikidata"
    type:  "WIKIDATA"
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    title: "Wikipedia"
    type:  "WIKIPEDIA"
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    title: "Pantheon 2.0"
    type:  "DATABASE"
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    title: "Josef Stefan"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D8%AC%D9%88%D8%B2%D9%81_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D9%86"
    title: "جوزف استفان"
    type:  "WIKIPEDIA"
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    type:  "WIKIPEDIA"
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    title: "Йозеф Стефан"
    type:  "WIKIPEDIA"
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    type:  "WIKIPEDIA"
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    title: "Josef Stefan"
    type:  "WIKIPEDIA"
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    title: "Jožef Stefan"
    type:  "WIKIPEDIA"
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    title: "Josef Stefan"
    type:  "WIKIPEDIA"
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    title: "Josef Stefan"
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    title: "Γιόζεφ Στέφαν"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Jo%C5%BEef_Stefan"
    title: "Jožef Stefan"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Josef_Stefan"
    title: "Josef Stefan"
    type:  "WIKIPEDIA"
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    title: "Jožef Stefan"
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    title: "جوزف استفان"
    type:  "WIKIPEDIA"
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    title: "Josef Stefan"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Josef_Stefan"
    title: "Josef Stefan"
    type:  "WIKIPEDIA"
  - url: "https://ga.wikipedia.org/wiki/Josef_Stefan"
    title: "Josef Stefan"
    type:  "WIKIPEDIA"
  - url: "https://gl.wikipedia.org/wiki/Josef_Stefan"
    title: "Josef Stefan"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%99%D7%95%D7%96%D7%A3_%D7%A1%D7%98%D7%A4%D7%9F"
    title: "יוזף סטפן"
    type:  "WIKIPEDIA"
  - url: "https://hr.wikipedia.org/wiki/Jo%C5%BEef_Stefan"
    title: "Jožef Stefan"
    type:  "WIKIPEDIA"
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    title: "Jožef Stefan"
    type:  "WIKIPEDIA"
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    title: "جوزيف ستيفان"
    type:  "WIKIPEDIA"

# bio (long form, separated for readability)
bio: |
  Born in Carinthia in 1835, Stefan moved through mathematics and physics in the Austrian Empire with uncommon range, writing poetry alongside his technical work. In 1879 he derived the law that radiation from a body scales with the fourth power of its temperature — a leap that turned thermal physics from guesswork into precision. The insight, later given theoretical grounding by his student Boltzmann, became the Stefan–Boltzmann law. He died in Vienna in January 1893, having shaped the physics of heat and light in ways that outlasted the empire he served.