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April 7
 1827: Englishman John Walker sold his first
friction matches.
1860:
W(ill) K(eith) Kellogg, founder of the Kellogg cereal company, was
born. 1913: The first electrically propelled ship of the U.S. Navy, the
U.S.S.
Jupiter, was commissioned. 1927: The first long-distance TV transmission was sent
from Washington, DC, to New York City. 1928: The
Detroit Police Department commenced regular one-way radio communication
with its patrol cars. 1945: Japan's largest battleship of WWII, the
Yamato, was sunk by Allied forces. 1947: Automobile magnate
Henry Ford died. 1953:
IBM unveiled the
IBM 701 Electronic Data Processing Machine - their first commercially
available scientific computer. 1957: The last of New York City's electric trolleys completed
its final run from Queens to Manhattan. 1959: The first
atomic generated electricity was produced at Los Alamos Scientific
Laboratory, NM. 1959: The first radar signal was bounced off the sun from Stanford, CA.
1981: Willem Klein
mentally extracted the 13th root of a 100-digit number in 29 seconds. 1983: Story Musgrave
and Don Peterson made the first Space Shuttle spacewalk.
| 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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