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 March 18
 1833:
Lucy Hobbs
Taylor, the first woman to earn a dental degree in America, was born. 1858:
Rudolf Diesel,
German thermal engineer who invented the internal-combustion engine that bears his
name, was born. 1871: Augustus De Morgan, who formulated De Morgan's laws for Boolean
algebra, died. 1899: Saturn's moon,
Phoebe,
was discovered by William Pickering. 1909:
Einar Dessau
of Denmark used a shortwave transmitter to converse with a government radio post
about six miles away in what's believed to have been the first broadcast by a ''ham''
operator. 1965: The first space walk took place as Soviet cosmonaut
Aleksei Leonov
left his Voskhod 2 capsule and remained outside the spacecraft for 20 minutes, secured
by a tether. 1974: Oil-producing Arab countries agreed to lift their 5-month
embargo on petroleum sales to the U.S., during which gasoline
prices soared 300%. 1987: The discovery of "high-temperature"
superconductivity was announced at an American Physical Society
in New York City. 1998: Hideo Shima, Japanese designer of the world's first "bullet train,"
died. 2014:
Marlan Bourns, founder of Bourns and inventor of the Trimpot trimming
potentiometer, died.
Note: These
historical tidbits (see daily
list) 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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