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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.
1630: German astronomer
Johannes Kepler, who formulated the three
major laws of planetary motion, died. 1806: Explorer Zebulon Pike sighted the mountaintop in Colorado now known as
"Pikes Peak." 1887: German scientist Carl
Gassner was issued a patent for the first "galvanic
battery," or dry cell, which used zinc as its primary ingredient. 1819: Scottish chemist
Daniel Rutherford, who discovered nitrogen, died. 1904: Patent #775,134
was granted to King Gillette for the safety razor. 1965: American engineer
Allen Du Mont, who invented the first
commercial cathode ray tube, died. 1971: Intel announced its first user-programmable microprocessor, the
4004, in a edition
of Electronic News magazine. 1988: The Soviet Union launched its first space shuttle,
Buran ("Snowstorm"), unmanned, on its
first and only orbital flight. 2000: The
Southern Cross broadband cable went into service, connecting Australia, New Zealand, Fiji, Hawaii and the U.S.
west coast over a distance of 30,500 km.