Thank you for visiting RF Cafe! Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes Wireless System Designer RF Stencils for Visio Shapes for Word Search RF Cafe Sitemap Advertising Facebook RF Cafe Homepage Thank you for visiting RF Cafe!

Day in Engineering History Archive - August 9

August 9

Happy Birthday Amedeo Avogadro! - Please click here to visit RF Cafe.Today is Smokey the Bear Day (1944). 1678: American Indians sold the Bronx to Jonas Bronck for 400 beads. 1776: Count Amedeo Avogadro, who discovered that at the same T and P all volumes of a perfect gas contained the same number of particles, and defined 6.022 x 1023 units per mole of a substance, was born. 1815: The first natural gas well in the U.S. was discovered. 1819: William Morton, the first dentist to use ether (letheon) during a tooth extraction, was born. 1831: The first steam locomotive train began its inaugural run between Albany and Schenectady, in NY. 1859: The passenger elevator was patented. 1892: Thomas Edison received a patent for the two-way telegraph. 1898: Rudolf Diesel was granted patent #608,845 for an "internal combustion engine" the diesel engine. 1910: The first completely self-contained electric washing machine was patented. 1945: During WW II, an atomic bomb (Fat Man) was dropped on Nagasaki, Japan, effectively ending the war begun with the 1941 surprise raid at Pearl Harbor. 1956: The first statewide, state-supported educational television network went on the air in AL. 1976: The U.S.S.R. launched Luna 24, last lunar flight to date from Earth. 1985: Arthur Walker, a retired Navy officer, was found guilty of seven counts of spying for the Soviet Union. 1998: Chinese engineers dynamited levees along the Yangtze River to ease the worst floods in 44 years. 2006: American physicist James Van Allen, discoverer of the Van Allen radiation belts, died.

| 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.

RF Cafe Software

   Wireless System Designer - RF Cafe
Wireless System Designer

RF & EE Symbols Word
RF Stencils for Visio
Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
Smith Chartâ„¢ for Excel

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
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

Try Using SEARCH
to Find What You Need. 
There are 1,000s of Pages Indexed on RF Cafe !

height-line