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Click here to read about RF CafeKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

Day in Engineering History Archive - April 28
April 28

"Philosophiae Naturalis Principia Mathematica" -  Please click here to visit RF Cafe.

1686: The first volume of Isaac Newton's "Philosophiae Naturalis Principia Mathematica" was presented to the Royal Society. 1774: Francis Baily, who studied the solar eclipse phenomenon of Baily's Beads, was born. 1843: Noah Webster, creator of America's first dictionary, died. 1916: Ferruccio Lamborghini, of sports car fame, was born. 1919: The first jump with the Army manually operated parachute was made. 1926: The term "wave mechanics" was coined by nuclear physicist Erwin Schrödinger in a letter addressed to Albert Einstein. 1927: The first test flight of the Spirit of St. Louis was conducted. 1928: Eugene Shoemaker, of Comet P/Shoemaker-Levy 9 fame, was born. 1930: The first motion picture of a total eclipse of the sun was taken from an airplane flying over Honey Lake, CA. 1937: Pan American Airlines made the first commercial flight across the Pacific using its infamous Clipper seaplane. 1952: The U.S. occupation of Japan ended (we've been good friends ever since). 1986: Russia announced the Chernobyl nuclear plant disaster.

| 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.
Please submit 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.

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Webmaster:  Kirt Blattenberger, BSEE - KB3UON
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