Adam Adamandy Kochański

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Adam Adamandy Kochański IPA: [ˈadam adaˈmandɨ kɔˈxaj̃ski] ^ⓘ (5 August 1631 – 17 May 1700) was a Polish mathematician, physicist, clock-maker, pedagogue and librarian.^[1] He was the Court Mathematician of John III Sobieski.^[1]

Kochański was born in

He wrote many scientific papers, mainly on mathematics and mechanics, but also on physics, astronomy and philosophy. The best known of his works, Observationes Cyclometricae ad facilitandam Praxin accommodatae, is devoted to the squaring the circle (or alternatively, the quadrature of the circle) and was published in 1685 in the leading scientific periodical of the time, Acta Eruditorum. He also found a famous approximation of π today called Kochański's approximation:^[2]

${\displaystyle {\sqrt {{40 \over 3}-2{\sqrt {3}}\ }}=3.14153333870509461863\dots }$

Kochański cooperated and corresponded with many scientists,

He died in Teplice in Bohemia.

References

• Kochański, Adam Adamandy (1685), "Observationes Cyclometricae ad facilitandam Praxin accomodatae", Acta Eruditorum, 4: 394–398

• Fukś, Henryk (2011), Observationes Cyclometricae by Adam Adamandy Kochański - Latin text with annotated English translation,
  Bibcode:2011arXiv1106.1808F