Day in Engineering History Archive - January 20
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.
1775: André-Marie Ampère, after whom the unit of current is named, was born. 1901: Zénobe-Théophile Gramme, inventor of the Gramme dynamo, died. 1930: Apollo 11 lunar lander astronaut Edwin "Buzz" Aldrin was born. 1960: The U.S. Army promoted Elvis Presley to the rank of Sergeant. 1969: Astronomers at the University of Arizona documented the first optical identification of a pulsar. 1981: Iran released 52 Americans that had been held hostage for 444 days, just minutes after the U.S. presidency had transferred from Jimmy Carter to Ronald Reagan. 1986: Britain and France announced plans to build the Chunnel - rail tunnels underneath the English Channel. 2004: The Salvation Army announced it had received a $1.5B donation from the estate of Joan Kroc, widow of McDonald's founder Ray Kroc.