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Day in Engineering History Archive - July 21

Day in Engineering History July 21 Archive - RF CafeJuly 21

Please click here to visit RF Cafe.1875: Mark Twain's "The Adventure of Tom Sawyer" copyright was registered. 1904: The 4,607-mile Trans-Siberian railway was completed after 13 years of work. 1915: U.S. Navy asked Thomas Edison to organize the keenest, most inventive minds to find a defense against submarines. 1930: The Veterans Administration of the U.S. was established. 1968: Arnold Palmer became the first golfer to make a million dollars in career earnings. 1969: Apollo 11 astronauts Neil Armstrong and Edwin "Buzz" Aldrin blasted off from the moon after 21-1/2 hours on the surface. 1970: The Aswan Dam in Egypt was completed after 18 years of work. 1977: The first shipment of crude oil arrived at the U.S. DoE's Strategic Petroleum Reserve in LA. 1994: Tony Blair became the youngest Labour leader since World War II. 1997: The "USS Constitution," which defended the US during the War of 1812, set sail under its own power for first time in 116 years. 1998: Alan Shepard, America's first man in space and one of only 12 humans who walked on the Moon, died. 2000: An international collaboration of scientists at the Fermi National Accelerator Laboratory announced the first direct evidence for the tau neutrino.

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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. Many 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. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.

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Copyright: 1996 - 2018
Webmaster:
    Kirt Blattenberger,
    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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