Joost Bürgi

Joost B?rgi (February 28 1552 - January 31 1632) was a Swiss clockmaker and mathematician. He is sometimes regarded as the inventor of the logarithm, although credit often goes to John Napier instead. He was also a major contributor to prosthaphaeresis, a technique for computing products quickly using trigonometric identities which predated logarithms.

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B?rgi was born in Lichtensteig, Switzerland and died in Kassel, Hesse-Kassel (now part of Germany).

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The lunar crater Byrgius is named in his honor.

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February 28: February 28 is the 59th day of the year in the Gregorian calendar. There are 306 days remaining, 307 in leap years....

January 31: January 31 is the 31st day of the year in the Gregorian Calendar. There are 334 days remaining, (335 in leap years). January 31 is also the last day of January....

1632: :See also: 1632 (novel)...