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

PCB Directory (Manufacturers)

Innovative Power Products (IPP) Directional Couplers

Innovative Power Products (IPP) RF Combiners / Dividers

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

LadyBug LB5954L Power Sensor with LAN Option - RF Cafe

Day in Engineering History Archive - December 10

Day in Engineering History December 10 Archive - RF CafeHappy Birthday Carl Gustav Jacob Jacobi!  Please click here to visit RF Cafe.December 10

1804: Karl Gustav Jacob Jacobi, founder of elliptical functions, was born. 1831: Thomas Seebeck, who discovered that an electric current flows between different conductive materials that are kept at different temperatures (Seebeck Effect), died. 1845: Civil engineer Robert Thompson patented pneumatic tires in London. 1896: Swedish chemist Alfred Nobel, who invented dynamite and who began the Nobel Prize system, died. 1901: The First Nobel Prize award ceremony was held. 1910: Frank Conrad, owner of more than 200 patents, developer the first commercial radio station, and coiner of the term "broadcast," died. 1920: Automobile maker Horace Dodge died. 1954: Lt. Col. John Paul Stapp, a flight surgeon, rode a rocket sled to 632 mph to determine if a pilot could eject from an airplane at supersonic speed and live - he did. 1958: The first domestic passenger jet flight took place in the U.S. as a National Airlines Boeing 707 flew 111 passengers from NYC to Miami. 1993: The crew of the space shuttle "Endeavour" deployed the repaired Hubble Space Telescope into Earth orbit. 2004: EU transport ministers gave final approval to build and deploy the Galileo satellite navigation system.

| 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.

LadyBug LB5954L Power Sensor with LAN Option - RF Cafe
Werbel Microwave (power dividers, couplers)

Noisecom

Innovative Power Products Passive RF Products - RF Cafe