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Day in Engineering History Archive - June 21
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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. All will eventually be either verified or removed.
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.
SpaceShipOne logo
1781: Siméon-Denis Poisson, mathematician and experimenter in electromagnetic theory, was born. 1788: The U.S. Constitution went into effect when New Hampshire became the 9th state of ratification. 1874: Anders Ångström, after whom the unit of wavelength is named, died. 1893: The first Ferris wheel premiered at Chicago's Columbian Exposition. 1913: Georgia Broadwick became the first woman to parachute from an airplane. 1945: U.S. troops took the island of Okinawa. 1948: The first successful long-playing microgroove phonograph records were introduced to the public. 1948: The Small-Scale Experimental Machine (SSEM), the first stored-program computer, ran its first program. 1986: Lloyd Espenschied, co-inventor of coaxial cable, died. 2004: Mike Melvill became the first civilian to pilot a craft into space, in Rutan's SpaceShipOne. 2005: The world's first solar sail spacecraft, funded by the non-profit U.S. Planetary Society, was placed in orbit.
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