Karl Ferdinand Braun was a German applied physicist who shared the 1909 Nobel Prize in Physics with Guglielmo Marconi for their contributions to the development of radio. With his two circuit system, long range radio transmissions and modern telecommunications were made possible. His invention of the phased array antenna in 1905 led to the development of radar, smart antennas, and MIMO. Braun built the first cathode-ray tube in 1897, which led to the development of television, and the first semiconductor diode in 1874, which co-started the development of electronics and electronic engineering.
Karl Ferdinand Braun, German-American physicist and academic, Nobel Prize laureate (born 1850)
Karl Ferdinand Braun, German-American physicist and academic, Nobel Prize laureate (born 1850)
On April 20, in the year 1918, Karl Ferdinand Braun, German-American physicist and academic, Nobel Prize laureate (born 1850). This event is recorded as a Notable Deaths event in the history of April 20, one of 323 recorded events on this date across all of history.
1 notable person is associated with this event, including K. Ferdinand Braun. Learn more below.
Key Facts
- This event took place on April 20, 1918 (AD era).
- It is categorised as a Notable Deaths event in recorded history.
- Referenced in 2 Wikipedia articles.
- 1 notable person is recorded as involved in or associated with this event.
- Wikipedia source last updated on 4 April 2026.
On This Date in History 323
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
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