Johannes Praetorius

"Johann Richter" redirects here. For German Romantic author, see Jean Paul.
Johannes Praetorius.

Johann Richter or Johannes Praetorius (1537 – 27 October 1616) was a Bohemian German mathematician and astronomer.

Life

Astronomia, ars liberalis

Praetorius was born in Jáchymov, Bohemia. From 1557 he studied at the University of Wittenberg, and from 1562 to 1569 he lived in Nuremberg. His astronomical and mathematical instruments are kept at Germanisches Nationalmuseum in Nuremberg.

In 1571 be became Professor of mathematics (astronomy) at Wittenberg where he met Valentinus Otho and Joachim Rheticus. He died in Altdorf bei Nürnberg, aged about 79.

He taught Copernicus' theory of astronomy initially as a means of eliminating the equant from Ptolemy's account, and later moving to a proto-Tychonic system.[1]

Works

References

  1. Westman, Robert S. (1975). "Three Responses to the Copernican Theory". The Copernican Achievement. University of California Press. pp. 290–305. ISBN 978-0-520-02877-7.

Sources

External links


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