1833: French mathematician Adrien-Marie Legendre, who introduced the Legendre Polynomials, died. 1862: American firearms manufacturer Samuel Colt died. 1863: London's Metropolitan, the world's first underground passenger railway, opened to the public. 1901: Oil was first discovered in state of Texas (first oil in the U.S. discovered in PA). 1936: American astronomer Robert Wilson, who co-discovered the cosmic microwave background noise at Bell Labs, was born. 1946: The U.S. Army Project Diana team used a 180 Hz signal pulse with a 1/4 sec duration to detect radar signals reflected off the moon's surface - the echo was received 2.4 seconds later. 1984: Clara Peller first asked, "Where's the Beef?
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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.