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 July 27
 1667:
Johann Bernoulli,
created exponential calculus, was born. 1844:
John Dalton,
known as one of the fathers of modern physical science and formulated the Atomic
Theory, died. 1849:
John Hopkinson, who developed Hopkinson's Law of magnetism and
invented the 3-phase AC generator, was born. 1866: After two failures, the first
underwater telegraph cable, 1,686 miles long, was laid across
the Atlantic Ocean between North America and Europe. 1882: British aircraft designer
Sir Geoffrey De Havilland was born. 1888:
Philip Pratt unveiled the first electric automobile. 1917:
Ford Motor Company introduced its first truck, the Model TT. 1921:
Canadian biochemist
Frederick Banting announced the discovery of the hormone insulin.
1940: Billboard Magazine first published its best-seller's charts. 1949:
The world's first jet-propelled airliner, the British
De Havilland Comet, made its maiden flight in England. 1993:
IBM reported a record $8.04 billion quarterly loss. 2003:
Bob Hope died.
| 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
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.
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