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Catalogue Number: |
28 |
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Stamp Design: |
Róbert Brun |
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Graphic Lay-out: |
Martin Činovský |
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Stamp Engraving: |
Martin Činovský |
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Date of Issue: |
May 25, 1994 |
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Printing: |
Postal Stationery Printing House, Prague, Czech Republic |
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Print Technology: |
Recess printing from flat plates |
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Print Run: |
7,335,000 |
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| FDC Design: |
Róbert Brun |
| FDC Engraving: |
František Horniak |
| Cancellation Design: |
Róbert Brun |
| Printing: |
Postal Stationery Printing House, Prague, Czech Republic |
| Print Technology: |
Recess printing from flat plates |
| FDC Print Run: |
10,000 |
Ján Andrej Segner
(Bratislava 9. 10. 1704 - Halle, Germany 5. 10. 1777)
Physicist, physician, Extraordinary Professor at the University of Jena, professor of mathematics, physics and chemistry at Göttingen and professor of physics and mathematics at Halle. In 1750 he produced a simple-reaction waterwheel known as the Segner watherwhel, an invention of great significance for the development of early reaction wather turbines. The principle of this invention is the subject of the stamp´s subsidiary motif. The FDC illustration also borrows from the inventor´s sketches. Though not very effective, the Segner wheel nonetheless found industrial application.
Ján Andrej Segner was a member of the St. Petersburg and Berlin Academies and of the Royal Society in London.
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