Galilei sighted four of Jupiter's moons (Io, Europa, Ganymede, and Callisto). 1785:
Jean Blanchard and John Jeffries made first air crossing of the English Channel from
England to France in a
hot-air balloon (first international flight). 1904: Marconi established
"CQD" (-·-· --·- -··,
CQ=be quite and listen,
D=distress) as the first international radio distress signal, but two years later, "SOS"
(··· --- ···, Save Our Souls) became the radio distress signal because it was faster
to send by wireless radio. 1927: Commercial
transatlantic telephone service was inaugurated between New York
and London. 1935: Sir Alfred Ewing, the physicist who discovered and named hysteresis,
died. 1943: Serbian-American high voltage experimenter
Nikola Tesla died. 1980: The
first solar-cell power plant was dedicated at Natural Bridges National
Monument, UT (266,029 solar cells in 12 producing 100 kW). 1998:
of error correction code fame, died. 2004: American electrical engineer
"Mike" Villard Jr., who developed over-the-horizon radar, died.
| 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.