| 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.
1473: Polish astronomer
Nicolaus Copernicus, who published proof of a sun-centered solar system, was born. 1834: Dutch ophthalmologist
Herman Snellen, developer of the visual acuity
Snellen Chart seen in all opticians' offices, was born. 1859:
Svante Arrhenius, whose famous
equation relating temperature change to chemical reactions and is applied to semiconductor lifetime
acceleration, was born. 1878: Thomas Edison received a patent for his
phonograph. 1916: Ernst Mach, of speed of
sound unit defining fame, died. 1945: During World War II, 30,000 U.S. Marines landed on the island of
Iwo Jima, where they encountered ferocious resistance from Japanese forces, and took control of the
strategically important island after a month-long battle. 1977: President Ford pardons Iva Toguri D'Aquino ("Tokyo Rose").
1986: The Soviet Union launched the
Mir space station.