Day in Engineering History Archive - April 19
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Note: These historical tidbits have been collected from various sources, mostly on the Internet.
As detailed in
, 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.
historical events and dates for inclusion in these lists. I will be glad to include your name and
birthday. Please do not submit your death date ;-)
A couple years ago, I began commemorating the birthdays of notable people and events with
RF Cafe logos
. Where available, I like to use images from postage stamps from the country where
the person or event occurred.
1775: The Battles
of Lexington and Concord, the first military engagements of the American Revolutionary War including "the shot
heard round the world," were fought. 1831: German physicist Johann Gottlieb Friedrich von
Bohnenberger, inventor of the gyroscope, died. 1877: Ole Evinrude, of outboard motor fame, was born. 1906:
Pierre Curie, who along with his wife, Marie, discovered spontaneous radioactivity in radium and polonium,
died. 1948: The ABC television network went on the air
for the first time. 1961: My lovely wife, Melanie, was born - Happy Birthday! 1975: India launched its first
satellite, Aryabhata, with aid from the USSR. 1989:
Pro-Democracy demonstrations began in Beijing's Tiananmen Square. 1993: Attorney General Janet Reno ordered the
raid on the
Branch-Davidian compound in Waco, TX, that resulted in the death of 86 men, women and children. 1995: A
truck bomb, driven by Timothy McVeigh and an unidentified passenger, exploded outside the
Alfred P. Murrah Federal Building in Oklahoma City, killing 168 people, and injuring 500.