Day. 1765: American inventor
whose cotton gin revolutionized the textile industry, was born.
1846: English mathematician
fame, was born. 1865: French mathematician
, who proved the prime number theorem,
was born. 1894: Russian mathematician
, after whom the Chebyshev filter transfer
function is named, died. 1931: A patent was granted to Lloyd Espenschied
and Herman Affel for the invention of
, described as a "concentric conducting system."
1941: President Roosevelt delivered his "Day
" speech on the radio, following the Japanese attack
on Pearl Harbor. 1980: Beatles member
was assassinated. 1993: The U.S. Secretary of Defense declared that
Global Positioning System
had 24 satellites operating in their
assigned orbits. 1993: NAFTA was signed into law. 1994 :A team of
German scientists at the Gesellschaft für Schwerionenforschung (GSI)
facility in Germany, created element 111 named
, symbol Uuu.
| 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.