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  April 8
1779:
Johann Schweigger,
the physicist who invented the galvanometer, was born. 1861:
Elisha
Otis, inventor of the automatic safety brake for elevators, died. 1886:
Carl Gassner
was issued a German patent for the first "dry" cell, which used zinc as its primary
ingredient. 1899: Martha Place became the first woman to be executed in the
electric chair
(a dubious claim for sure). 1911: Dutch physicist
Heike Kamerlingh Onnes discovered superconductivity. 1952:
Harry S. Truman signed an executive order seizing U.S. steel mills
to prevent strike of union steel workers (later ruled unconstitutional by the Supreme
Court). 1973: Artist Pablo Picasso died of a heart attack. 1974:
Hank Aaron hit his 715th home run, breaking Babe Ruth's record.
1997: Microsoft released Internet
Explorer 4.0.
| 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.
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