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 July 7
 1668: Sir Isaac Newton received
his M.A. from Trinity College in Cambridge. 1802: The first comic book "The Wasp,"
was published. 1816: Astronomer Rudolf Wolf, who discovered the
11-year sunspot
cycle, was born. 1914:
Robert Goddard received a patent for his two-stage solid fuel
rocket. 1915:
U.S. Navy asked Thomas Edison to organize the keenest, most inventive
minds to find a defense against submarines. 1930: Construction began on Boulder
Dam (later renamed
Hoover Dam). 1930:
Sir Arthur Conan Doyle, of Sherlock Holmes fame, died. 1936: Several U.S. patents were issued
for the Phillips-head screw and screwdriver to its inventor,
Henry Phillips. 1950: The first Farnborough Air Show was held. 1981:
Solar Challenger, the first solar-powered aircraft, crossed the
English Channel. 1986: IBM-PC DOS Version 3.2 (updated) was released. 1997: The
temperature dipped to 24 °F in
Tower, MN. 2005:
Muslim extremists attacked the London transport system, killing
37 people.
Note: These
historical tidbits (see daily
list) have been collected from various sources, mostly on the Internet.
As detailed in my
It Happened When? Factoid 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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