# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/kazimierz-fajans
# Generated: 2026-08-15T08:36:25.634Z

schema: https://schema.org/Person
url: "https://fame.am/person/kazimierz-fajans"
name: "Kazimierz Fajans"
slug: "kazimierz-fajans"
description: "Kazimierz Fajans was a Polish-Jewish physical chemist, a pioneer in the science of radioactivity and the co-discoverer of chemical element protactinium. He was four times nominated for the Nobel Prize—three times in Chemistry and once in Physics—but he was never honored."
tagline: "Polish-American scientist"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Kazimierz_Fajans.jpg?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: "1887-05-27"
deathDate: "1975-05-18"
livingStatus: "DECEASED"
scores:
  popularity:           50.77
  momentum:             0
  historical:           20.37332933333333
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://pt.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D9%83%D8%A7%D8%B2%D9%8A%D9%85%D9%8A%D8%B1%D8%B2_%D9%81%D8%A7%D9%8A%D8%A7%D9%86%D8%B3"
    title: "كازيميرز فايانس"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%83%D8%A7%D8%B2%D9%8A%D9%85%D9%8A%D8%B1%D8%B2_%D9%81%D8%A7%DA%86%D8%A7%D9%86%D8%B3"
    title: "كازيميرز فاچانس"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B2%DB%8C%D9%85%DB%8C%D8%B1%D8%B2_%D9%81%D8%A7%D8%AC%D8%A7%D9%86%D8%B3"
    title: "کازیمیرز فاجانس"
    type:  "WIKIPEDIA"
  - url: "https://az.wikipedia.org/wiki/Kazimir_Fayans"
    title: "Kazimir Fayans"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Kazimierz_Fajans"
    title: "Kazimierz Fajans"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%9A%CE%B1%CE%B6%CE%AF%CE%BC%CE%B9%CE%B5%CF%82_%CE%A6%CE%AC%CE%B3%CE%B9%CE%B1%CE%BD%CF%82"
    title: "Καζίμιες Φάγιανς"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Kazimierz_Fajans"
    title: "Kazimierz Fajans"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%DA%A9%D8%A7%DA%98%DB%8C%D9%85%DB%8C%D8%B4_%D9%81%D8%A7%DB%8C%D8%A7%D9%86%D8%B3"
    title: "کاژیمیش فایانس"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Kazimierz_Fajans"
    title: "Kazimierz Fajans"
    type:  "WIKIPEDIA"
  - url: "https://ga.wikipedia.org/wiki/Kazimierz_Fajans"
    title: "Kazimierz Fajans"
    type:  "WIKIPEDIA"
  - url: "https://hi.wikipedia.org/wiki/%E0%A4%95%E0%A4%BE%E0%A4%9C%E0%A4%BC%E0%A4%BF%E0%A4%AE%E0%A5%80%E0%A4%B0_%E0%A4%AB%E0%A4%BC%E0%A4%BE%E0%A4%AF%E0%A4%BE%E0%A4%A8%E0%A5%8D%E0%A4%B8"
    title: "काज़िमीर फ़ायान्स"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Kazimierz_Fajans"
    title: "Kazimierz Fajans"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://hy.wikipedia.org/wiki/%D4%BF%D5%A1%D5%A6%D5%AB%D5%B4%D5%AB%D6%80_%D5%96%D5%A1%D5%B5%D5%A1%D5%B6%D5%BD"
    title: "Կազիմիր Ֆայանս"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Kazimierz_Fajans"
    title: "Kazimierz Fajans"
    type:  "WIKIPEDIA"
  - url: "https://kn.wikipedia.org/wiki/%E0%B2%95%E0%B2%BE%E0%B2%B8%E0%B2%BF%E0%B2%AE%E0%B2%BF%E0%B2%B0%E0%B3%8D_%E0%B2%AB%E0%B2%9C%E0%B2%BE%E0%B2%A8%E0%B3%8D%E0%B2%B8%E0%B3%8D"
    title: "ಕಾಸಿಮಿರ್ ಫಜಾನ್ಸ್"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%EC%B9%B4%EC%A7%80%EB%AF%B8%EC%97%90%EC%8B%9C_%ED%8C%8C%EC%96%80%EC%8A%A4"
    title: "카지미에시 파얀스"
    type:  "WIKIPEDIA"
  - url: "https://nds.wikipedia.org/wiki/Kasimir_Fajans"
    title: "Kasimir Fajans"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Kazimierz_Fajans"
    title: "Kazimierz Fajans"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q213667"
    title: "Wikidata"
    type:  "WIKIDATA"

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