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What is the name of his significant contribution to the development of wireless telegraphy?

  • "Braun Effect"

  • "Telefunken Process"

  • "Wireless Marconi Systems"

  • "Braun Tube"

Answer

The Braun Tube was a significant contribution to the development of wireless telegraphy. It was invented by Karl Ferdinand Braun in 1897 and was the first device to successfully detect electromagnetic waves. The Braun Tube was able to detect radio waves and convert them into electrical signals, which could then be used to transmit messages.
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