Voltaire
,
Elémens de la philosophie de Neuton : mis à la portée de tout le monde
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DE LA PHILOSOPHIE
"/>
erreurs, que l’on répète tous les jours dans
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beaucoup de Livres qui ſont l’écho les uns
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des autres.</
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<
s
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xml:space
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">Voici en peu de mots la ſubſtance de la
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Démonſtration ſenſible de Romer, que la
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lumiere employe ſept à huit minutes dans
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ſon chemin du Soleil à la Terre.</
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</
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<
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<
s
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">On obferve de la Terre en C. </
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<
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">ce Satellite de
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<
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left
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">Dé-
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monſ-
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tration
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du mou-
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vement
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de la lu-
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miere.</
note
>
Jupiter, qui s’éclipſe réguliérement une fois
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en quarante-deux heures & </
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<
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">demie. </
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xml:space
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">Si la Ter-
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re étoit immobile, l’Obſervateur en C. </
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<
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">verroit
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en trente fois quarante-deux heures & </
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">demie,
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trente émerſions de ce Satellite, mais au
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bout de ce tems, la Terre ſe trouve en D.
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</
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<
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xml:space
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">alors l’Obſervateur ne voit plus cette émer-
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ſion préciſément au bout de trente fois qua-
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rante-deux heures & </
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">demie, mais il faut a-
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jouter le tems que la lumiere met à ſe mou-
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voir de C. </
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<
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xml:space
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">en D. </
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xml:space
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">& </
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">ce tems eſt ſenſible-
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ment conſidérable. </
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<
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xml:space
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">Mais cet eſpace C. </
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eſt encore moins grand que l’eſpace G. </
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car C. </
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eſt le Diametre du Cercle. </
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">Ce Cercle eſt
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le grand Orbe que décrit la Terre, le So-
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leil eſt au milieu; </
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<
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