![Day in Engineering History April 22 Archive - RF Cafe](../../../borders/logos/4-22.gif) April 22
1823:
Roller skates (inline at that) were patented by Robert Tyers,
a fruiter in Piccadilly, London. 1864: Congress authorized the use of the phrase
"In God We Trust" on U.S. coins. 1904:
Robert
Oppenheimer, the "Father" of the nuclear bomb, was born*. 1914:
Babe Ruth made his pitching debut with the Baltimore Orioles.
1924: A patent for a
laminated padlock was issued to Harry Soref, who later founded
Master Locks. 1933: Sir Henry Royce, half of the Rolls Royce team that builds automobiles
and airplane engines, died. 1952: An atomic test conducted in Nevada became the
first nuclear explosion shown on live network television. 1972: Apollo 16 astronauts
John Young and Charles Duke walked and rode in the
Lunar Rover
on the surface of the moon for seven hours, 23 minutes. 1991: Intel released the
80486SX microprocessor.
* source -
https://www.youtube.com/watch?v=lb13ynu3Iac
| Jan
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
Dec |
Note: These
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.
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