Cosmos a Sketch of a Physical Description of the Universe volume 3
Cosmos a Sketch of a Physical Description of the Universe volume 3
Humboldt, Alexander Von, 1769-1859
The book Cosmos a Sketch of a Physical Description of the Universe volume 3 was written by author Humboldt, Alexander Von, 1769-1859 Here you can read free online of Cosmos a Sketch of a Physical Description of the Universe volume 3 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Cosmos a Sketch of a Physical Description of the Universe volume 3 a good or bad book?
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Schumacher en Fevr. , 1839, in the Astr. Nachr. , No. 374. ) In this letter I wrote as follows : " M. Arago, qui possede des moyens photo- metriques entierement differents, de ceux qui ont ete publies jusqu'ici, m'avait rassure surla partie des erreurs qui pouvaient provenir du change- ment d'inclinaison d'un miroir entame sur la face interieure. II blame d'ailleurs le principe de ma methode et le regarde comme peu suscep- tible de perfectionnement, non seulement a cause de la difference des an...gles entre l'etoile vue directement et celle qui est amenee par reflex- ion, mais surtout parceque le resultat de la mesure d'intensite depend de la partie de l'ceil qui se trouve en face de l'oculaire. II y a erreur [orsque la pupille n'est pas tres exactement a la hauteur de la limite in- ferieure de la portion non entamee du petit miroir. " " M. Arago, who possesses photometric data differing entirely from those hitherto pub fished, had instructed me in reference to those errors which might arise from a change of inclination of a mirror silvered on its inner surface.
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