1879: Electric arc lights were used for the first time, in Cleveland's Public Square (then known as Monumental Park). 1893: American Nobel physicist Harold Urey, who discovered deuterium, was born. 1905: Philip H. Smith, inventor of the Smith Chart, was born. 1913: Gideon Sundback patented the zipper. 1921: David Sarnoff became general manager of RCA. 1937: Wallace Carothers, developer of nylon, died. 1945: American soldiers liberated the Dachau concentration camp. 1953: The first 3-D television broadcast was made by KECA-TV in Los Angeles, CA. 1966: William Eccles, who coined the term "diode," died. 1997: Astronaut Jerry Linenger and cosmonaut Vasily Tsibliyev went on the first U.S.-Russian space walk.
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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.