# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/hans-frauenfelder
# Generated: 2026-08-15T10:40:52.891Z

schema: https://schema.org/Person
url: "https://fame.am/person/hans-frauenfelder"
name: "Hans Frauenfelder"
slug: "hans-frauenfelder"
description: "Hans Frauenfelder was an American physicist and biophysicist notable for his discovery of perturbed angular correlation (PAC) in 1951. In the modern day, PAC spectroscopy is widely used in the study of condensed matter physics. Within biophysics, he is known for his experimental and theoretical research on the dynamical behavior of protein tertiary structure."
tagline: "Swiss American physicist (1922–2022)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Hans_Frauenfelder.jpg?width=1200"
gender: "male"
country:
  name: "Switzerland"
  isoCode: "CH"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1922-06-28"
deathDate: "2022-07-10"
livingStatus: "DECEASED"
scores:
  popularity:           38.6
  momentum:             3.333333333333333
  historical:           5.470986666666667
  currentAttention:     0
  sourceConfidence:     35
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://en.wikipedia.org/wiki/Hans_Frauenfelder"
    title: "Hans Frauenfelder"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D9%87%D8%A7%D9%86%D8%B3_%D9%81%D8%B1%D8%A7%D9%88%D9%86%D9%81%D9%84%D8%AF%D8%B1"
    title: "هانس فراونفلدر"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Hans_Frauenfelder"
    title: "Hans Frauenfelder"
    type:  "WIKIPEDIA"
  - url: "https://simple.wikipedia.org/wiki/Hans_Frauenfelder"
    title: "Hans Frauenfelder"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%87%D8%A7%D9%86%D8%B3_%D9%81%D8%B1%D8%A7%D9%88%D9%86%D9%81%D9%84%D8%AF%D8%B1"
    title: "هانس فراونفلدر"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Hans_Frauenfelder"
    title: "Hans Frauenfelder"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q823151"
    title: "Wikidata"
    type:  "WIKIDATA"

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