| Jan | Feb |
Mar | Apr | May |
| Jul | Aug |
Sep | Oct | Nov |
Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in
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.
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.
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 Bernard Vonderschmitt was born. 1947: Chuck Yeager became the first human to fly faster than the speed of sound in the rocket powered Bell XS-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.