Today is the Day of Trinity. 1739:
Charles de Cisternay DuFay
, discoverer of positive and negative
electricity and repulsion between like charges, died. 1867: Reinforced
concrete was patented by
of France. 1926: The first underwater color photographs
magazine. 1945: The U.S. detonated the first atomic
bomb in a test at the
Trinity test site
in Alamogordo, NM. 1948: The world's first
production turboprop aircraft, the
, made its maiden flight. 1951: Dan Bricklin, co-writer
, the first spreadsheet computer program, was born.
1957: Marine Maj.
set a transcontinental speed record when he flew
a jet from CA to NY in 3 hours, 23 minutes and 8 seconds. 1969:
blasted off from Cape Kennedy, FL, and began the first
manned mission to land on the moon. 1979: Saddam Hussein became
president of Iraq. 1994: The first of 21 fragments of the comet
hit Jupiter, creating a 1200-mile wide fireball 600 miles high.
1997: The Dow Jones Industrial Average (DJIA
closed above 8,000 for the first time. 1999:
John F. Kennedy, Jr.
, his wife and her sister, died when their
plane that Kennedy was piloting crashed into the Atlantic Ocean.
, who invented the Reduced Instruction Set Computer
| 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.