Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 119
he part under water seemsto be higher than it really is. Refraction is fully ex-plained in Natural Philosophy, and various experimentsand illustrations of it will be found there. 106. Refraction of the Heavenly Bodies by the Air.—The lower part of the air is denser than the upper part,and the light… … Fig. 25.—The Apparent Elevation of a Star by Atmospheric Refraction.(Greatly exaggerated.) and Z his zenith. The curved lines represent the at-mosphere. The lower ones are closer together, indi-cating that the atmosphere there is denser, while thehigher part of the atmosphere is much rarer, as…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-60-124.webp)
