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  April 28
1686: The first volume of Isaac
Newton's "Philosophiae Naturalis Principia Mathematica" was presented to
the Royal Society. 1774: Francis Baily, who studied the solar eclipse phenomenon of Baily's
Beads, was born. 1916:
Ferruccio
Lamborghini, of sports car fame, was born. 1919: The first jump with the Army
manually operated parachute was made. 1926: The term "wave mechanics" was coined
by nuclear physicist Erwin Schrödinger in a letter addressed to Albert Einstein.
1927: The first test flight of the
Spirit
of St. Louis was conducted. 1928:
Eugene Shoemaker,
of Comet P/Shoemaker-Levy 9 fame, was born. 1930: The first motion picture of a
total eclipse of the sun was taken from an airplane flying over Honey Lake, CA.
1937: Pan American Airlines made the first commercial flight across the Pacific
using its infamous
Clipper seaplane. 1952: The U.S. occupation of Japan ended (we've
been good friends ever since). 1986: Russia announced the Chernobyl nuclear plant
disaster.
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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