| Jan | Feb |
Mar | Apr |
May | Jun |
Jul | Aug |
Sep | Oct |
Nov | Dec |
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.
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
RF Cafe logos
. Where available, I like to use images from postage stamps from the country where
the person or event occurred.
, after whom the Chebyshev filter transfer function is named, was born. 1830: Mathematician
, inventor of the carbon microphone, was born. 1866:
was invented by Charles Hires. 1881: The first
for the public started service in Germany. 1866: The
replaced the half-dime coin.
was issued his last patent - for an electro-plating device. 1946: Jack Mullin showed the world
magnetic tape recorder
. 1960: A synthetic ruby crystal laser was first operated at Hughes Research
Laboratories. 1963: After 22 Earth orbits
returned to Earth, ending Project Mercury. 1975:
became the first woman to reach
the summit of Mount Everest. 1992: The space shuttle
completed its maiden voyage. 2002:
Star Wars: Episode II - Attack of the Clones
, was released in theaters.