1851: Hans Christian Oersted, who discovered electromagnetism and after whom the unit of magnetic field (H) is named, died. 1856: Edward Acheson, inventor of abrasive carborundum, the 2nd-hardest substance after diamond, was born. 1893: Dewar announced at the meeting of the Royal Society that he had succeeded in freezing air into a clear, transparent solid. 1932: Ford built its first V-8 vehicle. 1939: Russian cosmonaut Yuri Gagarin, the first human in space, was born. 1942: Robert Bosch, the German engineer and industrialist who was invented the spark plug and magneto, died. 1959: The first known radar contact was made with Venus. 1961: Sputnik 9 carried Chernushka the dog into orbit. 1964: The first Ford Mustang rolled off of the Ford assembly line.
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Apr | May |
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Aug | Sep |
Oct | Nov |
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.