# Hans Frauenfelder

> 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.

*Swiss American physicist (1922–2022)*

**Canonical URL:** https://fame.am/person/hans-frauenfelder

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** Switzerland
- **Born:** 1922-06-28
- **Died:** 2022-07-10
- **Status:** deceased
- **Gender:** male

## Bio

Imported from discovery source: wikidata-dump

## Fame
- **Popularity score:** 38.6 / 100
- **Momentum:** 3.3 / 100  (trend: FALLING)
- **Historical depth:** 5.5 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 35.0 / 100
- **Profile completeness:** 70.0 / 100

## Sources
- [Hans Frauenfelder](https://en.wikipedia.org/wiki/Hans_Frauenfelder)
- [هانس فراونفلدر](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)
- [Hans Frauenfelder](https://de.wikipedia.org/wiki/Hans_Frauenfelder)
- [Hans Frauenfelder](https://simple.wikipedia.org/wiki/Hans_Frauenfelder)
- [هانس فراونفلدر](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)
- [Hans Frauenfelder](https://pt.wikipedia.org/wiki/Hans_Frauenfelder)
- [Wikidata](https://www.wikidata.org/wiki/Q823151)

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