Thank you for visiting RF Cafe!

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeView the YouTube RF Cafe Intro VideoKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
RF & EE Symbols Word
RF Stencils for Visio

Day in Engineering History Archive - March 9

March 9

1851: Hans Christian Oersted, who discovered electromagnetism and after whom the unit of magnetic field (H) is named, died. 1856: Edward Acheson, inventor of abrasive carborundum, the 2nd-hardest substance after diamond, was born. 1893: Dewar announced at  the meeting of the Royal Society that he had succeeded in freezing air into a clear, transparent solid. 1932: Ford built its first V-8 vehicle. 1939: Russian cosmonaut Yuri Gagarin, the first human in space, was born. 1942: Robert Bosch, the German engineer and industrialist who was invented the spark plug and magneto, died. 1959: The first known radar contact was made with Venus. 1961: Sputnik 9 carried Chernushka the dog into orbit. 1964: The first Ford Mustang rolled off of the Ford assembly line.

| 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.
Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON

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