Excerpt from M???langes de Litt???rature, d'Histoire, Et de Philosophie, Vol. 2 Denfit??? variable. On fait qu'un rayon qui paf???e obliquement d'un milieu dans un autre ne continue pas fon chemin dans la m???me ligne droite fuivant la quelle il entre mais qu'il s'en d???tourne d'autant plus que la denfit??? du nouveau milieu di?fere plus de celle du milieu d'o??? il fort. Si donc un rayon de lu miere traverfe un fluide compof??? d'une infinit??? de couches chacune d'une denfit??? diff???rente il doit ??? chaque inf ...
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Excerpt from M???langes de Litt???rature, d'Histoire, Et de Philosophie, Vol. 2 Denfit??? variable. On fait qu'un rayon qui paf???e obliquement d'un milieu dans un autre ne continue pas fon chemin dans la m???me ligne droite fuivant la quelle il entre mais qu'il s'en d???tourne d'autant plus que la denfit??? du nouveau milieu di?fere plus de celle du milieu d'o??? il fort. Si donc un rayon de lu miere traverfe un fluide compof??? d'une infinit??? de couches chacune d'une denfit??? diff???rente il doit ??? chaque inf tant s'???carter un peu de fa dire&ion, par conf???quent d???crire une courbe. C3eft ce que font les rayons en p???n??? trant notre atmofphere dont les cou ches ???lafiiques fe corfipriment les unes les autres par leur poids font par conf???quent d'autant plus comprim???es d'autant plus denfes, qu'elles font plus proches de nous. M. Bernoulli prouva qu'en fuppofant une certaine loi dans les denfit???s de ces couches la courbe d???crite par le rayon de lu miere devoit ???tre une cyclo???de, comme la courbe de la plus vite defcente en ???toit une. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
