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| Fermat principle; Fermat's principle | |||
| Fermat's principle (des kürzesten Lichtweges, of stationary optical paths); Fermat law (des kürzesten Lichtweges, of stationary optical paths); Fermat's law (des kürzesten Lichtweges, of stationary optical paths); Fermat principle (des kürzesten Lichtweges, of stationary optical paths) | |||
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Fermatsches Prinzip : 2 phrases in 1 subject |
| Physics | 2 |