# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/ivar-waller
# Generated: 2026-08-13T04:42:21.283Z

schema: https://schema.org/Person
url: "https://fame.am/person/ivar-waller"
name: "Ivar Waller"
slug: "ivar-waller"
description: "Ivar Waller was a Swedish professor of theoretical physics at Uppsala University. He developed the theory of X-ray scattering by lattice vibrations of a crystal, building upon the prior work of Peter Debye. The Debye–Waller factor, which he introduced in his doctoral thesis in 1925, is the definitive treatment of the effect of thermal vibrations in X-ray crystallography. He was a member of the Royal Swedish Academy of Sciences from 1945, and the Nobel Committee for Physics 1945-1972."
tagline: "Swedish theoretical physicist (1898-1991)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/IvarWaller1965.jpg?width=1200"
gender: "male"
country:
  name: "Sweden"
  isoCode: "SE"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1898-06-11"
deathDate: "1991-04-12"
livingStatus: "DECEASED"
scores:
  popularity:           41.55
  momentum:             12.7
  historical:           8.471382666666667
  currentAttention:     0
  sourceConfidence:     50.00000000000001
  profileCompleteness:  70
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://uk.wikipedia.org/wiki/%D0%86%D0%B2%D0%B0%D1%80_%D0%92%D0%B0%D0%BB%D0%BB%D0%B5%D1%80"
    title: "Івар Валлер"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%A5%D9%8A%D9%81%D8%A7%D8%B1_%D9%88%D8%A7%D9%84%D8%B1"
    title: "إيفار والر"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Ivar_Waller"
    title: "Ivar Waller"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Ivar_Waller"
    title: "Ivar Waller"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Ivar_Waller"
    title: "Ivar Waller"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%A7%DB%8C%D9%88%D8%A7%D8%B1_%D9%88%D8%A7%D9%84%D8%B1"
    title: "ایوار والر"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Ivar_Waller"
    title: "Ivar Waller"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Ivar_Waller"
    title: "Ivar Waller"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Ivar_Waller"
    title: "Ivar Waller"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q909260"
    title: "Wikidata"
    type:  "WIKIDATA"

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