# Ivar Waller

> 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.

*Swedish theoretical physicist (1898-1991)*

**Canonical URL:** https://fame.am/person/ivar-waller

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** Sweden
- **Born:** 1898-06-11
- **Died:** 1991-04-12
- **Status:** deceased
- **Gender:** male

## Bio

Imported from discovery source: wikidata-dump

## Fame
- **Popularity score:** 41.5 / 100
- **Momentum:** 12.7 / 100  (trend: RISING)
- **Historical depth:** 8.5 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 50.0 / 100
- **Profile completeness:** 70.0 / 100

## Sources
- [Івар Валлер](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)
- [إيفار والر](https://ar.wikipedia.org/wiki/%D8%A5%D9%8A%D9%81%D8%A7%D8%B1_%D9%88%D8%A7%D9%84%D8%B1)
- [Ivar Waller](https://de.wikipedia.org/wiki/Ivar_Waller)
- [Ivar Waller](https://en.wikipedia.org/wiki/Ivar_Waller)
- [Ivar Waller](https://es.wikipedia.org/wiki/Ivar_Waller)
- [ایوار والر](https://fa.wikipedia.org/wiki/%D8%A7%DB%8C%D9%88%D8%A7%D8%B1_%D9%88%D8%A7%D9%84%D8%B1)
- [Ivar Waller](https://id.wikipedia.org/wiki/Ivar_Waller)
- [Ivar Waller](https://pt.wikipedia.org/wiki/Ivar_Waller)
- [Ivar Waller](https://sv.wikipedia.org/wiki/Ivar_Waller)
- [Wikidata](https://www.wikidata.org/wiki/Q909260)

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