Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes USAF radar shop Notable Quotes App Notes Calculators Education Engineering Magazines Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Stencils for Visio RF & EE Shapes for Word Advertising RF Cafe Homepage Sudoku puzzles Thank you for visiting RF Cafe!
Exodus Advanced Communications

Day in Engineering History Archive - August 13

Day in Engineering History August 13 Archive - RF CafeAugust 13

Happy Birthday Anders Ångström! - Please click here to visit RF Cafe.Today is International Lefthanders Day (yours truly is a south paw). 1642: Christiaan Huygens discovered the Martian south polar cap. 1814: Anders Ångström, after whom the unit of wavelength is named, was born. 1819: Sir George Gabriel Stokes, who developed the Stokes' Theorem, was born. 1866: Giovanni Agnelli, founder of the Fiat (Fabbrica Italiana Automobili Torino) automobile company, was born. 1888: Television inventor John Logie Baird was born. 1889:William Gray received a patent for a coin-operated telephone. 1902: Felix Wankel, inventor of the pistonless internal combustion engine, was born. 1912: The Radio Act of 1912, the first federal radio regulation law, was signed. 1912: The first experimental radio license was issued to St. Joseph's College in Philadelphia, PA. 1960: Echo One, placed in orbit a day earlier, allowed the first two-way telephone conversation by satellite to take place. 1961: Troops in East Germany sealed off the border between East and West Berlin, and construction of the Berlin Wall began. 1990: Iraq transferred between $3 billion and $4 billion in gold bullion, foreign currencies and goods seized from Kuwait to Baghdad. 1991: Jack Ryan, inventor with more than 1,000 patents including the Barbie Doll and Hot Wheels cars, died.  1996: Microsoft released IE 3.0.

| 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.

Anatech Electronics (RF Filters) - RF Cafe
Exodus Advanced Communications - RF Cafe Axiom Test Equipment - RF Cafe
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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:  AirplanesAndRockets.com

spacer

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free