Sidereus nuncius magna longeque, admirabilia spectacula pandens, suspiciendáque proponens unicuique, præsertim vero philosophis atque astronomis, quæ à Galileo Galileo ... : atque Medicea sidera nuncupandos decrevit.

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Title: Sidereus nuncius magna longeque, admirabilia spectacula pandens, suspiciendáque proponens unicuique, præsertim vero philosophis atque astronomis, quæ à Galileo Galileo ... : atque Medicea sidera nuncupandos decrevit.
Author: Galilei, Galileo, 1564-1642.
Publication: Londini :: Typis Jacobi Flesher, prostat apud Cornelium Bee ...,; 1653.
Rights/Permissions: To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
Subject terms: Astronomy -- Early works to 1800.
Cite this Item: "Sidereus nuncius magna longeque, admirabilia spectacula pandens, suspiciendáque proponens unicuique, præsertim vero philosophis atque astronomis, quæ à Galileo Galileo ... : atque Medicea sidera nuncupandos decrevit." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A41880.0001.001. University of Michigan Library Digital Collections. Accessed May 5, 2024.

Pages

LIII. PROBLEMA.

Lente convexa lumen de nocte longissime ejaculari.

[illustration]

Lumen sit post len∣tem in puncto concur∣sus parallelorū radio∣rum. Igitur radii lu∣minis divergētes ver∣sus lentem, refractione facta paralleli exibunt per xxxiv. xxxv. xxxix. xl. Conducit lumen hoc poni in centro speculi concavi, ut radii aversi reflectantur in lumen & per id transeant in lentem. Quod si retraxeris tamen à lente, illuminatio illa fortissima ex infinito propius accedet ad lentem, ita poteris illam moderari ut illumines aliquem locum quantum velis distantem, per XLI.