# Karl Ferdinand Braun

> He built the first cathode-ray tube, invented the semiconductor diode, and designed the phased array antenna — three devices that seeded television, all of electronics, and radar. Most of the signals humming through modern life trace back to his bench.

*German inventor and physicist (1909 Nobel Prize)*

**Canonical URL:** https://fame.am/person/karl-ferdinand-braun

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** Germany
- **Born:** 1850-06-06
- **Died:** 1918-04-20
- **Status:** deceased
- **Gender:** male

## Bio

Karl Ferdinand Braun was born on 6 June 1850 in Germany and worked as an applied physicist at a time when wireless communication was still theoretical. In 1874 he constructed the first semiconductor diode, a quiet landmark that would eventually open the door to all of electronics. Twenty-three years later, in 1897, he built the first cathode-ray tube — the ancestor of every television screen for the next century. His two-circuit system made long-range radio transmission practical, and in 1905 he invented the phased array antenna, the architecture underlying radar and modern smart antennas. He shared the 1909 Nobel Prize in Physics with Guglielmo Marconi for their work on radio, co-founded Telefunken, and died on 20 April 1918, leaving behind the infrastructure of the connected world.

## Fame
- **Popularity score:** 67.4 / 100
- **Momentum:** 23.2 / 100  (trend: RISING)
- **Historical depth:** 23.5 / 100
- **Now attention:** 32.5 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 70.0 / 100
- **Category rank:** #123

## Topics
#Scientists, #Scientist, #Physics, #Science, #19th Century

## Sources
- [Wikipedia](https://en.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [Wikidata](https://www.wikidata.org/wiki/Q57077)
- [Pantheon 2.0](https://pantheon.world/profile/person/Karl%20Ferdinand%20Braun)
- [كارل فرديناند براون](https://ar.wikipedia.org/wiki/%D9%83%D8%A7%D8%B1%D9%84_%D9%81%D8%B1%D8%AF%D9%8A%D9%86%D8%A7%D9%86%D8%AF_%D8%A8%D8%B1%D8%A7%D9%88%D9%86)
- [كارل فرديناند براون](https://arz.wikipedia.org/wiki/%D9%83%D8%A7%D8%B1%D9%84_%D9%81%D8%B1%D8%AF%D9%8A%D9%86%D8%A7%D9%86%D8%AF_%D8%A8%D8%B1%D8%A7%D9%88%D9%86)
- [کارل فردیناند برون](https://azb.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B1%D9%84_%D9%81%D8%B1%D8%AF%DB%8C%D9%86%D8%A7%D9%86%D8%AF_%D8%A8%D8%B1%D9%88%D9%86)
- [Karl Braun](https://az.wikipedia.org/wiki/Karl_Braun)
- [Карл Фердынанд Браўн](https://be.wikipedia.org/wiki/%D0%9A%D0%B0%D1%80%D0%BB_%D0%A4%D0%B5%D1%80%D0%B4%D1%8B%D0%BD%D0%B0%D0%BD%D0%B4_%D0%91%D1%80%D0%B0%D1%9E%D0%BD)
- [Карл Фердинанд Браун](https://bg.wikipedia.org/wiki/%D0%9A%D0%B0%D1%80%D0%BB_%D0%A4%D0%B5%D1%80%D0%B4%D0%B8%D0%BD%D0%B0%D0%BD%D0%B4_%D0%91%D1%80%D0%B0%D1%83%D0%BD)
- [কার্ল ফের্ডিনান্ড ব্রাউন](https://bn.wikipedia.org/wiki/%E0%A6%95%E0%A6%BE%E0%A6%B0%E0%A7%8D%E0%A6%B2_%E0%A6%AB%E0%A7%87%E0%A6%B0%E0%A7%8D%E0%A6%A1%E0%A6%BF%E0%A6%A8%E0%A6%BE%E0%A6%A8%E0%A7%8D%E0%A6%A1_%E0%A6%AC%E0%A7%8D%E0%A6%B0%E0%A6%BE%E0%A6%89%E0%A6%A8)
- [Karl Ferdinand Braun](https://bs.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [Karl Ferdinand Braun](https://ca.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [کارڵ فێردیناند براون](https://ckb.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B1%DA%B5_%D9%81%DB%8E%D8%B1%D8%AF%DB%8C%D9%86%D8%A7%D9%86%D8%AF_%D8%A8%D8%B1%D8%A7%D9%88%D9%86)
- [Karl Ferdinand Braun](https://cs.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [Karl Ferdinand Braun](https://da.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [Ferdinand Braun](https://de.wikipedia.org/wiki/Ferdinand_Braun)
- [Καρλ Φέρντιναντ Μπράουν](https://el.wikipedia.org/wiki/%CE%9A%CE%B1%CF%81%CE%BB_%CE%A6%CE%AD%CF%81%CE%BD%CF%84%CE%B9%CE%BD%CE%B1%CE%BD%CF%84_%CE%9C%CF%80%CF%81%CE%AC%CE%BF%CF%85%CE%BD)
- [K. Ferdinand Braun](https://en.wikipedia.org/wiki/K._Ferdinand_Braun)
- [Ferdinand Braun](https://eo.wikipedia.org/wiki/Ferdinand_Braun)
- [Carl Ferdinand Braun](https://es.wikipedia.org/wiki/Carl_Ferdinand_Braun)
- [Karl Ferdinand Braun](https://et.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [Karl Ferdinand Braun](https://eu.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [کارل فردیناند براون](https://fa.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B1%D9%84_%D9%81%D8%B1%D8%AF%DB%8C%D9%86%D8%A7%D9%86%D8%AF_%D8%A8%D8%B1%D8%A7%D9%88%D9%86)
- [Karl Ferdinand Braun](https://fi.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [Ferdinand Braun](https://fr.wikipedia.org/wiki/Ferdinand_Braun)
- [Karl Ferdinand Braun](https://ga.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [MusicBrainz](https://musicbrainz.org/artist/c9bf1ea2-b4ff-4324-ac30-04ced26ecf7c)
- [Karl Ferdinand Braun](https://af.wikipedia.org/wiki/Karl_Ferdinand_Braun)
- [Karl Ferdinand Braun](https://an.wikipedia.org/wiki/Karl_Ferdinand_Braun)

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