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Day in Engineering History Archive - April 14 | ||||||
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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.
Please submit significant
historical events and dates for inclusion in these lists. I will be glad to include your name and
birthday. Please do not submit your death date ;-)
A couple 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.
April 14  1629: Christiaan Huygens, discoverer of the wave theory of light and of Saturn's moon Titan, was born. 1807: German chemist Jeremias Richter, who discovered law of equivalent proportions, died. 1869: The airbrake was patented by George Westinghouse. 1894: The first public showing of Thomas Edison's kinetoscope took place. 1898: Harold Black, who developed the negative-feedback principle for amplifier design, was born. 1912: David Sarnoff picked up the distress call of the Titanic relayed from ships at sea: "S.S. Titanic ran into iceberg, sinking fast." 1918: U.S. First Aero Squadron engaged in America's first aerial dogfight with enemy aircraft over Toul, France. 1956: Ampex Corporation of Redwood City, CA, demonstrated the first commercial magnetic tape recorder for sound and picture. 1961: Manmade element Lawrencium (Lw, #103), was first produced. 2000: The Dow industrials plummeted 617 points and the Nasdaq composite index fell 355 points. | ||||||
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