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Day in Engineering History Archive - June 19

Day in Engineering History June 19 Archive - RF CafeJune 19

Happy Birthday Blaise Pascal!  Please click here to visit RF Cafe.1623: Child prodigy and mathematical genius Blaise Pascal was born. 1851: Silvanus Thompson, authority on electricity, magnetism and acoustics, was born. 1900: Michael Pupin was granted a patent for reducing signal attenuation on a cable , enabling long distance telephony. 1910: The first airship passengers flew aboard the zeppelin LZ7 Deutschland. 1931: Installation was completed on the first commercial doors operated by photoelectric cell. 1934: The U.S. Congress established the Federal Communications Commission (FCC), which replaced the Federal Radio Commission (FRC). 1953: Julius and Ethel Rosenberg were executed at Sing Sing Prison in Ossining, NY, having been convicted of conspiring to pass U.S. atomic secrets to the Soviet Union. 1970: The Patent Cooperation Treaty was signed.1977: The Trans-Alaska Pipeline began carrying oil from the Arctic Ocean to Prince William Sound. 2007: NASA astronaut Suni Williams set a new record for time in space by a female (>188 days). 2019: U.S. patent #10,000,000 was awarded for Coherent Lidar Using Intra-Pixel Coherent Detection.

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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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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright:
1996 - 2024

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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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