mathematician Adrien-Marie Legendre, who introduced the
died. 1862: American firearms manufacturer
Samuel Colt died. 1863:
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
Robert Wilson, who co-discovered the cosmic microwave background
noise at Bell Labs, was born. 1946: The U.S. Army
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
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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.