A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 221
wed out on both sides. E is a concavo-convex lens, whose curves differ, but do not meet, if produced. F is a miniscus, or a concavo-convex lens, the curves of whose surfaces meet 499. A double-convexlens converges parallelrays to a point calledthe focus / and the dis-tance of the focus de-pends… … 497. What allowance for refraction ? Tables ? 498. What is a lens f (Draw and describe different kinds ?) 499. Refracting powei of dovMe-convex lens? Focal distance? (Diagramand illustrate.) ATMOSPHEKICAL REFRACTION. 217
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Eyn schön nützlich Büchlin vnd Vnderweisung der Kunst des Messens mit dem Zirckel, Richtscheidt oder Linial : zu nutz allen Kunstliebhabern fürnemlich den Malern, Bildhawern, Goldschmiden, Seidenstikern, Steynmetzen, Scheinern auch allen Andern so sich der Kunst des Messens (Perspectiua zü latin gnant) zügebrauchen Lust haben : darin Man auch solche Kunst leichter dan ausz etzlichen hieuorgetruckten Büchern begreiffen vn lernen mag mit vil [i.e., 56] schönen darzü dienenden Figuren (1531)](https://img.insideoutlibrary.com/img/200/ia-eynschnntzlichbc00rodl-20-24.webp)
