# Johannes Franz Hartmann

> Johannes Franz Hartmann was a German physicist and astronomer. In 1904, while studying the spectroscopy of Delta Orionis he noticed that most of the spectrum had a shift, except the calcium lines, which he interpreted as indicating the presence of interstellar medium.

*German astronomer (1865–1936)*

**Canonical URL:** https://fame.am/person/johannes-franz-hartmann

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** Germany
- **Born:** 1865-01-11
- **Died:** 1936-09-13
- **Status:** deceased
- **Gender:** male

## Bio

Imported from discovery source: wikidata-dump

## Fame
- **Popularity score:** 50.2 / 100
- **Momentum:** 1.2 / 100  (trend: STABLE)
- **Historical depth:** 20.1 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 70.0 / 100

## Sources
- [約翰內斯·哈特曼](https://zh.wikipedia.org/wiki/%E7%B4%84%E7%BF%B0%E5%85%A7%E6%96%AF%C2%B7%E5%93%88%E7%89%B9%E6%9B%BC)
- [يوهانس فرانز هارتمان](https://ar.wikipedia.org/wiki/%D9%8A%D9%88%D9%87%D8%A7%D9%86%D8%B3_%D9%81%D8%B1%D8%A7%D9%86%D8%B2_%D9%87%D8%A7%D8%B1%D8%AA%D9%85%D8%A7%D9%86)
- [جوهانس فرانز هارتمان](https://arz.wikipedia.org/wiki/%D8%AC%D9%88%D9%87%D8%A7%D9%86%D8%B3_%D9%81%D8%B1%D8%A7%D9%86%D8%B2_%D9%87%D8%A7%D8%B1%D8%AA%D9%85%D8%A7%D9%86)
- [یوهانس فرانز هارتمن](https://azb.wikipedia.org/wiki/%DB%8C%D9%88%D9%87%D8%A7%D9%86%D8%B3_%D9%81%D8%B1%D8%A7%D9%86%D8%B2_%D9%87%D8%A7%D8%B1%D8%AA%D9%85%D9%86)
- [Johannes Franz Hartmann](https://ca.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Johannes Franz Hartmann](https://de.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Γιοχάνες Φραντς Χάρτμαν](https://el.wikipedia.org/wiki/%CE%93%CE%B9%CE%BF%CF%87%CE%AC%CE%BD%CE%B5%CF%82_%CE%A6%CF%81%CE%B1%CE%BD%CF%84%CF%82_%CE%A7%CE%AC%CF%81%CF%84%CE%BC%CE%B1%CE%BD)
- [Johannes Franz Hartmann](https://en.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Johannes Franz Hartmann](https://eo.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Johannes Franz Hartmann](https://es.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Juan Hartmann](https://eu.wikipedia.org/wiki/Juan_Hartmann)
- [یوهانس فرانز هارتمن](https://fa.wikipedia.org/wiki/%DB%8C%D9%88%D9%87%D8%A7%D9%86%D8%B3_%D9%81%D8%B1%D8%A7%D9%86%D8%B2_%D9%87%D8%A7%D8%B1%D8%AA%D9%85%D9%86)
- [Johannes Franz Hartmann](https://fr.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Johannes Franz Hartmann](https://hu.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Յոհաննես Ֆրանց Հարտման](https://hy.wikipedia.org/wiki/%D5%85%D5%B8%D5%B0%D5%A1%D5%B6%D5%B6%D5%A5%D5%BD_%D5%96%D6%80%D5%A1%D5%B6%D6%81_%D5%80%D5%A1%D6%80%D5%BF%D5%B4%D5%A1%D5%B6)
- [Johannes Franz Hartmann](https://it.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [ヨハネス・ハルトマン](https://ja.wikipedia.org/wiki/%E3%83%A8%E3%83%8F%E3%83%8D%E3%82%B9%E3%83%BB%E3%83%8F%E3%83%AB%E3%83%88%E3%83%9E%E3%83%B3)
- [Johannes Franz Hartmann](https://mg.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Johannes Franz Hartmann](https://nds.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Johannes Franz Hartmann](https://nl.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Johannes Franz Hartmann](https://pl.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [Хартман, Йоханнес Франц](https://ru.wikipedia.org/wiki/%D0%A5%D0%B0%D1%80%D1%82%D0%BC%D0%B0%D0%BD%2C_%D0%99%D0%BE%D1%85%D0%B0%D0%BD%D0%BD%D0%B5%D1%81_%D0%A4%D1%80%D0%B0%D0%BD%D1%86)
- [Johannes Franz Hartmann](https://sv.wikipedia.org/wiki/Johannes_Franz_Hartmann)
- [யோகான்னசு பிரான்சு ஆர்ட்மேன்](https://ta.wikipedia.org/wiki/%E0%AE%AF%E0%AF%8B%E0%AE%95%E0%AE%BE%E0%AE%A9%E0%AF%8D%E0%AE%A9%E0%AE%9A%E0%AF%81_%E0%AE%AA%E0%AE%BF%E0%AE%B0%E0%AE%BE%E0%AE%A9%E0%AF%8D%E0%AE%9A%E0%AF%81_%E0%AE%86%E0%AE%B0%E0%AF%8D%E0%AE%9F%E0%AF%8D%E0%AE%AE%E0%AF%87%E0%AE%A9%E0%AF%8D)
- [Йоганнес Франц Гартман](https://uk.wikipedia.org/wiki/%D0%99%D0%BE%D0%B3%D0%B0%D0%BD%D0%BD%D0%B5%D1%81_%D0%A4%D1%80%D0%B0%D0%BD%D1%86_%D0%93%D0%B0%D1%80%D1%82%D0%BC%D0%B0%D0%BD)
- [Wikidata](https://www.wikidata.org/wiki/Q61206)

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