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Day in Engineering History Archive - March 19

March 19

The swallows return to San Juan Capistrano - RF CafeDay in Engineering History March 19 Archive - RF CafeOn this date every year, swallows traditionally return to the San Juan Capistrano Mission in CA. 1858: Britain's first planetarium, the London Planetarium, opened. 1886: Aircraft manufacturer Giuseppe Bellanca (Citabria, Decathlon, Viking) was born. 1918: Congress approved daylight-saving time (DST). 1932: The Sydney Harbour Bridge in Australia opened for traffic. 1933: The Civilian Conservation Corps was created. 1987: French physicist Louis de Broglie, known for his research on quantum theory and for his discovery of the wave nature of electrons, died. 1989: Boeing B-22 Osprey VTOL aircraft made its maiden flight. 1991: Patent #5,000,000 was issued. 2001: California officials declared a power alert, ordering the first of two days of rolling blackouts. 2007: A partial solar eclipse is lined up for Asia. 2008: Sci-Fi write Arthur C. Clark (2001 Space Odyssey) died.

| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |

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
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    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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