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 July 6
 1854: German physicist
Georg Simon Ohm,
in honor of whom the unit of resistance is named, died. 1885:
Louis
Pasteur successfully tested his anti-rabies vaccine. 1905: For the first time
fingerprints were exchanged between international law enforcement. 1920: A
radio compass was used for first time for aircraft navigation
to fly from Hampton Roads directly to the battleship Ohio. 1923: The Union of Soviet
Socialist Republics (USSR) was formed. 1928: The first all-talking motion picture
was shown in NY. 1931:
Edward
Acheson, inventor of abrasive carborundum, the 2nd-hardest substance after diamond,
died. 1932: The
postage rate for first class mail in the U.S. went from 2¢ to
3¢. 1948: Frieda Barkin Hennock became the first woman to serve as the commissioner
of the FCC. 1958:
Alaska became the 49th state. 1986:
National Air Traffic Control Day was first observed. 1997: The
Mars Pathfinder deployed the remote-controlled
Sojourner to explore the surface of Mars. 1998: Singing cowboy
Roy Rogers
died. 2000: The German parliament offered a formal apology to Nazi-era slave and
forced laborers as it passed a bill setting up a $5B compensation fund.
| 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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