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 September 13
 1845: Michael Faraday discovered
that an electromagnetic field effects light polarization - the
Faraday Effect. 1851:
Walter Reed,
after whom the Walter Reed Hospital is named, was born. 1857:
Milton Snavely Hershey of chocolate fame was born. 1898:
Hannibal Goodwin
patented celluloid photographic film, which is used to make movies. 1899:
Henry Bliss became the first automobile accident fatality after
stepping off a trolley in New York City. 1915: Antennalyzer inventor
Wendell C. Morrison was born. 1922: 136.4 °F (58 °C), the world's
highest shade
temperature was recorded 25 miles south of Tripoli, Libya. 1937:
Polaroid Corporation was founded. 1945: Cunningham and
Werner first isolated a microscopic amount of
americium (Am, 95).
1938: QST magazine editor and radio-controlled aircraft pioneer
Ross Hull died from electrocution while experimenting with a TV.
1956: IBM introduced the 350 RAMAC hard disk drive (HDD). 1961: An unmanned
Mercury (MA-4)
capsule was orbited and recovered by NASA in a test for thefirst manned flight.
1970: The
Concorde SST landed for first time at Heathrow airport. 1977:
The first diesel automobiles introduced by General Motors. 1985: The first
anti-satellite intercept test took place when a weapon launched
from an F–15 destroyed a satellite orbiting at a speed of 17,500 miles per hour
approximately 290 miles above Earth. 2001:
Airports closed after the terrorist attacks on 9-11 began reopening.
| 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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