Custom Search
Over 10000 Pages Indexed
Your Host
Click here to read about RF CafeKirt
Blattenberger

... single-
handedly
redefining
what an
engineering website
should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5CCG (5th MOB):
My USAF radar shop

Hobby & Fun

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse
riding business website -
lots of info

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Job Board

About RF Cafe©

RF Cafe E-Mail

Day in Engineering History Archive - November 12

| 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.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-)
A couple 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.

November 12

Please click here to visit RF Cafe.

1802: John Dalton announced the first example of the law of multiple proportions. 1916: Percival Lowell, the American astronomer who helped discover Pluto and believed that there was life on Mars, died. 1923: Goodyear Tire & Rubber Company announced it had purchased all patents and rights to manufacture Zeppelin dirigibles (bad decision). 1926: Jack Ryan, inventor with more than 1,000 patents including the Barbie Doll and Hot Wheels cars, was born. 1936: The Oakland Bay Bridge opened. 1942: The naval battle of Guadalcanal began between Japanese and American forces. 1970: A 240 km/h cyclone hit East Pakistan (Bangladesh). 1979: William Friedman, the cryptologist who broke the Japanese "Purple" code, permitting the reading of many critical Japanese messages during WWII, died. 1980: The US space probe "Voyager One" came within 77,000 miles of Saturn. 1981: The shuttle Columbia became the first spacecraft ever launched twice from Earth.


 
A Disruptive Web Presence

Custom Search
Over 10,000 pages indexed! (none duped or pirated)

Read About RF Cafe
Webmaster: Kirt Blattenberger
    KB3UON

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

RF & EE Symbols Word
RF Stencils for Visio

Product & Service Directory
Personally Selected Manufacturers
RF Cafe T-Shirts & Mugs

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel