Search RFCafe.com                           
      More Than 17,000 Unique Pages
Please support me by ADVERTISING!
Serving a Pleasant Blend of Yesterday, Today, and Tomorrow™ Please Support My Advertisers!
   Formulas & Data
Electronics | RF
Mathematics
Mechanics | Physics
     AI-Generated
     Technical Data
Pioneers | Society
Companies | Parts
Principles | Assns


 About | Sitemap
Homepage Archive
        Resources
Articles, Forums Calculators, Radar
Magazines, Museum
Radio Service Data
Software, Videos
     Entertainment
Crosswords, Humor Cogitations, Podcast
Quotes, Quizzes
   Parts & Services
1000s of Listings
 Vintage Magazines
Electronics World
Popular Electronics
Radio & TV News
QST | Pop Science
Popular Mechanics
Radio-Craft
Radio-Electronics
Short Wave Craft
Electronics | OFA
Saturday Eve Post

Software: RF Cascade Workbook
RF Stencils Visio | RF Symbols Visio
RF Symbols Office | Cafe Press
Espresso Engineering Workbook

Aegis Power  |  Alliance Test
Centric RF  |  Empower RF
ISOTEC  |  Reactel  |  RFCT
San Fran Circuits



Anatech Electronics RF Microwave Filters - RF Cafe

Windfreak Technologies Frequency Synthesizers - RF Cafe

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

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Advertise your products and services on RF Cafe

Day in Engineering History Archive - December 27

Day in Engineering History December 27 Archive - RF CafeHappy Birthday Johannes Kepler!  Please click here to visit RF CafeDecember 27

1571: German astronomer Johannes Kepler, who formulated the three major laws of planetary motion, was born. 1771: Henri Pitot, discoverer of the pitot tube used for airspeed measurements, died. 1822: French microbiologist Louis Pasteur, who developed the pasteurization process for milk preservation and developed the rabies vaccine, was born. 1825: The first public railroad using steam locomotive was completed in England. 1923: French civil engineer Gustave Eiffel, of tower fame, died. 1932: Radio City Music Hall opened in NYC. 1949: United States of Indonesia gained independence from Netherlands. 1968: Apollo 8 and its three astronauts made a safe, nighttime splashdown in the Pacific. 1977: Star Wars hit British theaters.

| 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.

Advertise your products and services on RF Cafe
Amplifier Solutions Corporation (ASC) - RF Cafe

Innovative Power Products Cool Chip Thermal Dissipation - RF Cafe

Innovative Power Products Passive RF Products - RF Cafe