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Philosophiae Naturalis Principia Mathematica Published

Newton's Principia represents one of the greatest milestones in the history of science. The three-volume work includes Newton's three famous laws of motion, treatises on dynamics and fluid motion, and an explanation of Kepler's laws of planetary motion. It dominated the scientific view of the physical universe for three centuries after its publication. Although Newton used calculus to derive his results, he explained them by use of older geometric methods. Why might he have done this?

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The Battle of Alcatraz

A failed escape from Alcatraz Island Federal Penitentiary by six inmates in 1946 prompted a massive security response involving the San Francisco Police Department, US Coast Guard, FBI, Air Force, and Marines. Two guards and three prisoners were killed during the two-day confrontation that has come to be known as "The Battle of Alcatraz," and two more prisoners were later executed for their role in the incident. How many years passed before prisoners attempted another escape from Alcatraz?

Born on a day like today

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Jean Cocteau

Cocteau was a French author and filmmaker who worked in nearly every artistic medium. His versatile, unconventional approach and enormous output brought him international acclaim, and he is best known for the novel Les Enfants Terribles, the play La Machine Infernale, and the film Beauty and the Beast. Despite his achievements in virtually all literary and artistic fields, Cocteau insisted that he was primarily a poet. What was his connection to Pablo Picasso?

Last updated on Saturday, 5th July 2008

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