![Day in Engineering History April 19 Archive - RF Cafe](../../../borders/logos/4-19.gif) April 19
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: Nobel laureate
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.
| Jan
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
Dec |
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.
|