1838: A U.S. patent was issued
to John Ericsson for the
propeller. 1884: The first edition of the
Oxford English Dictionary was printed. 1903:
Sir George Gabriel Stokes, who developed the Stokes' Theorem,
died. 1911: Thomas Jennings was found guilty with the first use of
fingerprint evidence. 1954: American electrical engineer
Armstrong, a pioneer in radio communications and electronic theory and inventor
of the CW transmitter, regenerative & superheterodyne circuits, and frequency
modulation, died. 1959: Texas Instruments was issued a patent for the integrated
circuit. 1968: Canada's army, air force, and navy were combined into a single
Forces. 1972: The first hand-held scientific calculator (HP-35) hit the market for $395. 1976: German physicist and Nobel
Werner Heisenberg, famous for his Heisenberg Principle, died.
1981: Donald Wills Douglas, of aircraft design fame, died. 1982:
Late Night With David Letterman first aired. 2003: The
Space Shuttle disintegrated over Texas during re-entry.
| 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.