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Day in Engineering History Archive - June 24

Day in Engineering History June 24 Archive - RF CafeJune 24

Happy Birthday Wilhelm Cauer! - Please click here to visit RF Cafe.1633: The Inquisition released Galileo Galilei after having ruled him guilty of heresy two days earlier. 1880: Jules Lissajous, the French mathematician after whom Lissajous figures are named, was died. 1881: Sir William Huggins made the first photographic spectrum of a comet. 1900: German mathematician Wilhelm Cauer, of filter transfer function fame, was born. 1915: Sir Fred Hoyle, the astronomer who coined the term "Big Bang," was born. 1930: The first radar detection of aircraft took place at Anacostia Air Station, D.C. 1963: The first demonstration of a home video recorder was made at the BBC News Studios using the Telcan. 1964: The Federal Trade Commission announced that starting in 1965, cigarette manufactures will be required to include warnings on their packaging about the harmful effects of smoking. 1968: This was the deadline for redeeming silver certificate dollars for silver bullion. 1969: Willy Ley, founder of the German Rocket Society, died. 1975: A moon tremor, caused by a strike of Taurid meteors, was detected by the seismometer network left on the Moon's surface by Apollo astronauts. 1997: The U.S. Air Force released a report on the "Roswell Incident," suggesting the alien bodies witnesses reported seeing in 1947 were actually life-sized dummies. 2012: Radio Canada International's final shortwave broadcast was made.

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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.

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