1884: Transparent paper-strip photographic film was patented
by George Eastman. 1908:
George Brown, who developed the turnstile TV antenna, and the vestigial
sideband filter, was born. 1923: Xilinx co-founder
was born. 1947: Chuck Yeager became the first human to fly faster than the speed of sound
in the rocket powered Bell
X-1 over Murac Dry Lake, CA. 1960: The 4th legal definition of the meter was made to be
1,650,763.73 wavelengths in vacuum of the orange-red light radiation of the krypton-86 atom
(transition between levels 2p10 and 5d5). 1984:
Sir Martin Ryle, who
developed the first synthetic aperture radio telescope systems, died. 1996: The Dow Jones
Industrial Average (DJIA) closed above 6,000 for the first time. 1997: British Royal Air Force
pilot Andy Green broke the land-speed record by driving a jet-powered car faster than the
speed of sound. 2001: NASA's Galileo spacecraft passed within 112 miles of Jupiter's moon
Io. 2004: The FCC adopted rules for broadband over power lines (BPL). 2010: Benoit Mandelbrot, popularize of fractal geometry, was born.
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
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.