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 July 1
 Today is
Canada Day. 1788:
Jean-Victor Poncelet, who formulated the Continuity Principle
(which includes the principle of duality and the method of reciprocation), was born.
1860: Charles
Goodyear, who invented vulcanization of rubber, died. 1872: Airplane designer
Louis Blériot, was born. 1901: The U.S. Standards Bureau became
effective, later to become the National Institute of Standards and Technology (NIST).
1909: Thomas Edison began commercial manufacture of his new "A" type alkaline storage
batteries. 1912:
Harriet Quimby, the first female pilot to fly across the English
Channel, died. 1934: The first X-ray photograph of the whole body taken in a one-second
exposure in Rochester, N.Y. 1963: The U.S. postmaster introduced the five-digit
ZIP
(Zone Improvement Post) code. 1971: Nobel laureate
Sir Lawrence Bragg, developer of the Bragg law of x-ray diffraction,
died. 1979: The first Sony Walkman went on sale. 1980: "O Canada" was proclaimed the
national anthem of Canada. 1983:
R. Buckminster
Fuller, inventor of the geodesic dome and after whom the Buckeyball (the Buckminster
Fullerene) was named, died. 1997: China resumed sovereignty over
Hong
Kong. 1999: Forrest Mars, inventor of M&M candies and the Milky Way bar,
died. 1999: Exactly 6 months before the year 2000, Congress passed legislation to
shield businesses from a potential flood of Y2K computer-related lawsuits. 2001:
Nobel Prize winning Russian physicist
Nikolay Basov, who developed the maser, died.
Note: These
historical tidbits (see daily
list) have been collected from various sources, mostly on the Internet.
As detailed in my
It Happened When? Factoid 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.
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