# Hans Geiger

> He built the machine that clicks faster the closer you get to danger — a handheld oracle for invisible threat. But before that counter made his name a verb, Geiger fired particles at gold foil and found the atom had a heart.

*German physicist (1882–1945)*

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

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** Germany
- **Born:** 1882-09-30
- **Died:** 1945-09-24
- **Status:** deceased
- **Gender:** male

## Bio

Johannes Wilhelm Geiger was born 30 September 1882, a German experimental physicist who would give radiation a voice. He carried out the Rutherford scattering experiments — firing particles at gold foil, expecting them to pass through, watching them ricochet — and in that deflection found proof of the atomic nucleus. Later he invented the Geiger counter, the device that turns ionizing radiation into audible warning. He also performed the Bothe–Geiger coincidence experiment, confirming that energy holds its ground even when light meets particle. His brother Rudolf charted weather and climate; Hans charted the invisible. He died 24 September 1945, six days short of sixty-three.

## Fame
- **Popularity score:** 53.8 / 100
- **Momentum:** 0.0 / 100  (trend: STABLE)
- **Historical depth:** 22.2 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 70.0 / 100

## Topics
#Scientists, #Scientist, #Physics, #Science, #Germany, #Europe, #20th Century

## Sources
- [Wikipedia](https://en.wikipedia.org/wiki/Hans_Geiger)
- [Wikidata](https://www.wikidata.org/wiki/Q57189)
- [Pantheon 2.0](https://pantheon.world/profile/person/Hans%20Geiger)
- [هانز جايجر](https://arz.wikipedia.org/wiki/%D9%87%D8%A7%D9%86%D8%B2_%D8%AC%D8%A7%D9%8A%D8%AC%D8%B1)
- [هانس قایقر](https://azb.wikipedia.org/wiki/%D9%87%D8%A7%D9%86%D8%B3_%D9%82%D8%A7%DB%8C%D9%82%D8%B1)
- [Hans Geyger](https://az.wikipedia.org/wiki/Hans_Geyger)
- [Ганс Вільгельм Гайгер](https://be_x_old.wikipedia.org/wiki/%D0%93%D0%B0%D0%BD%D1%81_%D0%92%D1%96%D0%BB%D1%8C%D0%B3%D0%B5%D0%BB%D1%8C%D0%BC_%D0%93%D0%B0%D0%B9%D0%B3%D0%B5%D1%80)
- [Ганс Вільгельм Гейгер](https://be.wikipedia.org/wiki/%D0%93%D0%B0%D0%BD%D1%81_%D0%92%D1%96%D0%BB%D1%8C%D0%B3%D0%B5%D0%BB%D1%8C%D0%BC_%D0%93%D0%B5%D0%B9%D0%B3%D0%B5%D1%80)
- [Ханс Гайгер](https://bg.wikipedia.org/wiki/%D0%A5%D0%B0%D0%BD%D1%81_%D0%93%D0%B0%D0%B9%D0%B3%D0%B5%D1%80)
- [Hans Geiger (fizikour)](https://br.wikipedia.org/wiki/Hans_Geiger_(fizikour))
- [Hans Geiger](https://ca.wikipedia.org/wiki/Hans_Geiger)
- [ھانس گایگەر](https://ckb.wikipedia.org/wiki/%DA%BE%D8%A7%D9%86%D8%B3_%DA%AF%D8%A7%DB%8C%DA%AF%DB%95%D8%B1)
- [Hans Geiger](https://cs.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://da.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger (Physiker)](https://de.wikipedia.org/wiki/Hans_Geiger_(Physiker))
- [Χανς Γκάιγκερ](https://el.wikipedia.org/wiki/%CE%A7%CE%B1%CE%BD%CF%82_%CE%93%CE%BA%CE%AC%CE%B9%CE%B3%CE%BA%CE%B5%CF%81)
- [Hans Geiger](https://eo.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://es.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://et.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://eu.wikipedia.org/wiki/Hans_Geiger)
- [هانس گایگر](https://fa.wikipedia.org/wiki/%D9%87%D8%A7%D9%86%D8%B3_%DA%AF%D8%A7%DB%8C%DA%AF%D8%B1)
- [Hans Geiger](https://fi.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://fr.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://ga.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://gl.wikipedia.org/wiki/Hans_Geiger)
- [Hans Geiger](https://an.wikipedia.org/wiki/Hans_Geiger)
- [هانز غايغر](https://ar.wikipedia.org/wiki/%D9%87%D8%A7%D9%86%D8%B2_%D8%BA%D8%A7%D9%8A%D8%BA%D8%B1)

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