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. 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. 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.
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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. 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.