# Joseph von Fraunhofer

> He found dark lines crossing the sun's light where no one else had looked — and those lines became astronomy's Rosetta Stone, letting us read the chemistry of stars from Earth.

*Bavarian physicist and optical lens manufacturer*

**Canonical URL:** https://fame.am/person/joseph-von-fraunhofer

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** Germany
- **Born:** 1787-03-06
- **Died:** 1826-06-07
- **Status:** deceased
- **Gender:** male

## Bio

Born in 1787, Joseph Ritter von Fraunhofer was a German physicist and optical lens manufacturer who made achromatic telescopes and objective lenses by refining optical glass to new standards. In 1814, he discovered dark absorption lines in the sun's spectrum — now called Fraunhofer lines — and studied them systematically. He developed diffraction grating and invented the spectroscope, tools that turned those lines into a method for determining the composition of celestial bodies. He died in 1826 at thirty-nine. Europe's largest applied research organization, the Fraunhofer Society, carries his name, and his epitaph reads *Aproximavit sidera*: He brought closer the stars.

## Fame
- **Popularity score:** 61.6 / 100
- **Momentum:** 25.0 / 100  (trend: BREAKOUT)
- **Historical depth:** 23.3 / 100
- **Now attention:** 100.0 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 70.0 / 100

## Topics
#Scientists, #Scientist, #Physics, #Astronomy, #Chemistry, #19th Century

## Sources
- [Wikidata](https://www.wikidata.org/wiki/Q43948)
- [Wikipedia](https://en.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Pantheon 2.0](https://pantheon.world/profile/person/Joseph%20von%20Fraunhofer)
- [یوزف فون فراونهوفر](https://azb.wikipedia.org/wiki/%DB%8C%D9%88%D8%B2%D9%81_%D9%81%D9%88%D9%86_%D9%81%D8%B1%D8%A7%D9%88%D9%86%D9%87%D9%88%D9%81%D8%B1)
- [Yozef fon Fraunhofer](https://az.wikipedia.org/wiki/Yozef_fon_Fraunhofer)
- [Joseph von Fraunhofer](https://bar.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Іозеф Фраўнгофер](https://be.wikipedia.org/wiki/%D0%86%D0%BE%D0%B7%D0%B5%D1%84_%D0%A4%D1%80%D0%B0%D1%9E%D0%BD%D0%B3%D0%BE%D1%84%D0%B5%D1%80)
- [Йозеф фон Фраунхофер](https://bg.wikipedia.org/wiki/%D0%99%D0%BE%D0%B7%D0%B5%D1%84_%D1%84%D0%BE%D0%BD_%D0%A4%D1%80%D0%B0%D1%83%D0%BD%D1%85%D0%BE%D1%84%D0%B5%D1%80)
- [ইয়োসেফ ফন ফ্রাউনহোফার](https://bn.wikipedia.org/wiki/%E0%A6%87%E0%A6%AF%E0%A6%BC%E0%A7%8B%E0%A6%B8%E0%A7%87%E0%A6%AB_%E0%A6%AB%E0%A6%A8_%E0%A6%AB%E0%A7%8D%E0%A6%B0%E0%A6%BE%E0%A6%89%E0%A6%A8%E0%A6%B9%E0%A7%8B%E0%A6%AB%E0%A6%BE%E0%A6%B0)
- [Joseph von Fraunhofer](https://bs.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://ca.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://cs.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://da.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://de.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Γιόζεφ φον Φράουνχοφερ](https://el.wikipedia.org/wiki/%CE%93%CE%B9%CF%8C%CE%B6%CE%B5%CF%86_%CF%86%CE%BF%CE%BD_%CE%A6%CF%81%CE%AC%CE%BF%CF%85%CE%BD%CF%87%CE%BF%CF%86%CE%B5%CF%81)
- [Joseph von Fraunhofer](https://eml.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://eo.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://es.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://et.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://eu.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [یوزف فون فراون‌هوفر](https://fa.wikipedia.org/wiki/%DB%8C%D9%88%D8%B2%D9%81_%D9%81%D9%88%D9%86_%D9%81%D8%B1%D8%A7%D9%88%D9%86%E2%80%8C%D9%87%D9%88%D9%81%D8%B1)
- [Joseph von Fraunhofer](https://fi.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Joseph von Fraunhofer](https://fr.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Josef von Fraunhofer](https://ga.wikipedia.org/wiki/Josef_von_Fraunhofer)
- [Joseph von Fraunhofer](https://gl.wikipedia.org/wiki/Joseph_von_Fraunhofer)
- [Wikiquote](https://en.wikiquote.org/wiki/Joseph_von_Fraunhofer)
- [جوزيف فون فراونهوفر](https://ar.wikipedia.org/wiki/%D8%AC%D9%88%D8%B2%D9%8A%D9%81_%D9%81%D9%88%D9%86_%D9%81%D8%B1%D8%A7%D9%88%D9%86%D9%87%D9%88%D9%81%D8%B1)
- [چوزيف فون فراونهوفر](https://arz.wikipedia.org/wiki/%DA%86%D9%88%D8%B2%D9%8A%D9%81_%D9%81%D9%88%D9%86_%D9%81%D8%B1%D8%A7%D9%88%D9%86%D9%87%D9%88%D9%81%D8%B1)

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