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Day in Engineering History Archive - April 6 | ||||||
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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 6  648 B.C.: Earliest total solar eclipse recorded by Greeks was observed. 1889: The Kodak Camera was offered for sale by George Eastman. 1890: German aircraft designer Anthony Fokker, creator of the Red Baron's famous DR-1 triplane, was born. 1892: Donald Wills Douglas, of aircraft design fame, was born. 1912: An electric starter first appeared in cars to replace the hand crank. 1914: Hiram Maxim, with $50 in backing by the Radio Club of Hartford, proposed the formation of the American Radio Relay League (ARRL). 1917: America formally entered World War I. 1927: William P. MacCracken, Jr. earned license number ‘1’ when the Department of Commerce issued the first pilots license.1938: DuPont researchers accidentally discovered polytetrafluoroethylene (PTFE) and was marketed as Teflon. 1954: The TV Dinner was first sold by Swanson & Sons. 1965: The first U.S. commercial geosynchronous communications satellite, "Early Bird" Intelsat 1, was launched. 1973: Pioneer 11 was launched to Jupiter and Saturn. 1992: Prolific science fact and fiction writer Isaac Asimov died. 1998: The Dow Jones Industrial Average (DJIA) closed above 9,000 for the first time. | ||||||
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