The geography of the heavens, and class-book of astronomy: accompanied by a celestial atlas (1873)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868, ed, Whitall, Henry, 1819-1887? Celestial planisphere · New York, Sheldon & company · leaf 305
LIGHT PROCEEDING FROM WATER. B … 639. When light passesobliquely from a denserto a rarer medium, asfrom water into air, it isrefracted from a perpen-dicular towards a horizon-tal. Here the lamp A shines upthrough water into atr. The raythat strikes the surface perpen-dicularly passes on to B withoutoeing refracted; but the other…
Constellations · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
