Philipp Matthäus Hahn

Matthaeus Hahn

Philipp Matthäus Hahn (November 25, 1739 in Scharnhausen, today part of Ostfildern – May 2, 1790 in Echterdingen, today part of Leinfelden-Echterdingen) was a German pastor and inventor.

In about 1763 he devised a precision sundial, or heliochronometer that incorporated the correction for the equation of time.[1]

In 1773 he designed one of the earliest mechanical calculators of which two are known to have survived to the present day. A renowned clockmaker, several horological museums display his works, including the Deutsches Uhrenmuseum which contains a mechanical orrery (planetarium) and a Weltmaschine by the "Priestermechaniker (priest mechanic)".

References

  1. Christopher St. J.H. Daniel (4 March 2008). Sundials. Osprey Publishing. pp. 47–. ISBN 978-0-7478-0558-8. Retrieved 25 March 2013.

Bibliography

External links


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