# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/alfred-otto-carl-nier
# Generated: 2026-08-15T01:29:28.712Z

schema: https://schema.org/Person
url: "https://fame.am/person/alfred-otto-carl-nier"
name: "Alfred Otto Carl Nier"
slug: "alfred-otto-carl-nier"
description: "Alfred Otto Carl Nier was an American physicist who pioneered the development of mass spectrometry. He was the first to use mass spectrometry to isolate uranium-235 which was used to demonstrate that 235U could undergo fission and developed the sector mass spectrometer configuration now known as Nier-Johnson geometry."
tagline: "American physicist (1911–1994)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Alfred_Nier_and_Kenneth_Bainbridge.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: "1911-05-28"
deathDate: "1994-05-16"
livingStatus: "DECEASED"
scores:
  popularity:           45.32
  momentum:             11.1952357154756
  historical:           8.281066666666666
  currentAttention:     0
  sourceConfidence:     50.00000000000001
  profileCompleteness:  70
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://sv.wikipedia.org/wiki/Alfred_O.C._Nier"
    title: "Alfred O.C. Nier"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D8%A2%D9%84%D9%81%D8%B1%D8%AF_%D8%A7%D9%88._%D8%B3%DB%8C_%D9%86%DB%8C%D8%B1"
    title: "آلفرد او. سی نیر"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Alfred_Nier"
    title: "Alfred Nier"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Alfred_O._C._Nier"
    title: "Alfred O. C. Nier"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Alfred_Nier"
    title: "Alfred Nier"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%A2%D9%84%D9%81%D8%B1%D8%AF_%D8%A7%D9%88._%D8%B3%DB%8C_%D9%86%DB%8C%D8%B1"
    title: "آلفرد او. سی نیر"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Alfred_Otto_Carl_Nier"
    title: "Alfred Otto Carl Nier"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%EC%95%A8%ED%94%84%EB%A6%AC%EB%93%9C_%EB%8B%88%EC%96%B4"
    title: "앨프리드 니어"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Alfred_Nier"
    title: "Alfred Nier"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q429114"
    title: "Wikidata"
    type:  "WIKIDATA"

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