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Leonard Euler (10 SFR) |
 "10 SFR: front (click for larger image, 143k)") 10 SFR: front (click for larger image, 143k)
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Pastel drawing by Emanuel Handmann from 1753. |
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 "front: involute gear (click for larger image, 93k)") (click for larger image, 93k) |
front: involute gear invented by Euler (involute gear on Wikipedia and a german article) |
 "front: Euler Diagrams (click for larger image, 93k)") (click for larger image, 93k) |
front: Euler Diagrams demonstrating syllogisms (Euler Diagrams on Wikipedia) |
 "back: planetary system (click for larger image, 190k)") (click for larger image, 190k) |
back: planetary system with the sun, the planets Mercury, Venus, Earth, Mars, Jupiter and Saturn with their moons and Comet Halley. |
 "back: optical path through a combination of lenses (click for larger image, 61k)") (click for larger image, 61k) |
back: optical path through a combination of lenses to minimize speric and chromatic abberation |
 "back: water turbine (click for larger image, 167k)") (click for larger image, 167k) |
back: water turbine, efficiency factor 71%, contrived by Euler |
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Copyright © Andreas Tabak, 1998 - 2006 Last update on 21-Jul-2007 |
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 "10 SFR: back (click for larger image, 159k)")