Day in Engineering History Archive - April 14
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.
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.