Galilei was forced by the Inquisition to "abjure, curse, and detest" his Copernican
heliocentric views. 1675: The
Greenwich Observatory in England was created via Royal Warrant by Charles II. 1925:
Felix Klein, mathematician
and creator of the single-surfaced Klein bottle, died. 1941: Germany invaded Stalin's
Soviet Union during
World War II. 1946: Jet airplanes were used to transport mail for the
first time. 1954: Karl Compton, who directed the development of radar during WWII, died.
1973: The first manned Skylab (Skylab
2) crew of astronauts splashed down safely after a then record 28 days in space.
1978: James Christy and Robert Harrington discovered
the only known moon of Pluto. 1983: For the first time a satellite was retrieved from
orbit by the Space Shuttle. 1993: Intel introduced the 80586, 64-bit, 60 MHz
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
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.