Fig. 161. — Coupe de la lunette polariscope de M. Arago.
<bdi><a href="https://en.wikipedia.org/wiki/en:Fran%C3%A7ois_Arago" class="extiw" title="w:en:François Arago"><span title="French mathematician, physicist, astronomer and politician (1786-1853)">François Arago</span></a>
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Extrait de "Astronomie populaire" Tome 2 de François ARAGO sur Wikisource