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!
MECA Electronics

Day in Engineering History Archive March 7

March 7

Selma to Montgomery march for equality - RF CafeDay in Engineering History March 7 Archive - RF Cafe1788: Antoine-César Becquerel, who was the first to use electrolysis to recover metals from ores, was born. 1792: Astronomer Sir John F. W. Herschel, was born. 1809: Jean-Pierre-François Blanchard, who was the first to fly across the English Channel (in a balloon), died. 1837: Astrophotographer Henry Draper was born. 1876: Alexander Graham Bell received a patent (#174,465) for his telephone. 1926: The first successful trans-Atlantic radio-telephone conversation took place, between New York City and London. 1933: The board game Monopoly was copyrighted. 1936: Adolf Hitler ordered his troops to march into the Rhineland, breaking the Treaty of Versailles and the Locarno Pact. 1996: The first surfaces of Pluto were obtained by the Hubble Space Telescope.

| 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.

ERZIA (RF amplifiers, wireless, communications) - RF Cafe PCB Directory (Design)
Res-Net Microwave - RF Cafe Axiom Test Equipment - RF Cafe
About RF Cafe
Kirt Blattenberger - RF Cafe Webmaster
Copyright: 1996 - 2018
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 Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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