Day in Engineering History Archive March 7

March 7

1788: Antoine-César Becquerel, who was the first to use electrolysis to recover metals from ores, was born. 1792: Astronomer Sir John F. W. Herschel, was born. 1809: Jean-Pierre-François Blanchard, who was the first to fly across the English Channel (in a balloon), died. 1837: Astrophotographer Henry Draper was born. 1876: Alexander Graham Bell received a patent (#174,465) for his telephone. 1926: The first successful trans-Atlantic radio-telephone conversation took place, between New York City and London. 1933: The board game Monopoly was copyrighted. 1936: Adolf Hitler ordered his troops to march into the Rhineland, breaking the Treaty of Versailles and the Locarno Pact. 1996: The first surfaces of Pluto were obtained by the Hubble Space Telescope.

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Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified. Many years ago, I began commemorating the birthdays of notable people and events with special RF Cafe logos. Where available, I like to use images from postage stamps from the country where the person or event occurred. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.