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Ian Poole   Written by Ian Poole .
  Experienced electronics engineer and author.








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4 March 2026

Fact of the day: On this day in 1877 Emile Berliner announced his invention of the microphone. In 1859 Aleksandr Popov, the Russian physicist and electrical engineer was born. In 1890, the Forth Railway Bridge, spanning the Forth river between Edinburgh and Dundee, Scotland was opened.

Quote: I think there\'s a world market for about five computers. Thomas Watson, founder of IBM. Said well before the introduction of any PCs!

Point to ponder: The temperature at the visible surface of the Sun is around 5 700 C.





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