luminous rays
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rays — informal, chiefly N. Amer. sunlight considered in the context of sunbathing. → ray rays a specified form of non luminous radiation: → ray … English new terms dictionary
ACTINIC RAYS — non luminous rays of higher frequency than the luminous rays … The Nuttall Encyclopaedia
List of most luminous stars — Below is a list of stars arranged in order of decreasing luminosity (increasing bolometric magnitude). Accurate measurement of stellar luminosities is quite difficult in practice, even when the apparent magnitude is measured accurately, for three … Wikipedia
Seven rays — The Seven Rays is a metaphysical concept that has appeared in several religions and esoteric philosophies since at least the sixth century BCE, in both Western culture and in India. In the west, it can be seen in early western mystery traditions… … Wikipedia
Obscure rays — Obscure Ob*scure ([o^]b*sk[=u]r ), a. [Compar. {Obscurer} ([o^]b*sk[=u]r [ e]r); superl. {Obscurest}.] [L. obscurus, orig., covered; ob (see {Ob }) + a root probably meaning, to cover; cf. L. scutum shield, Skr. sku to cover: cf. F. obscur. Cf.… … The Collaborative International Dictionary of English
Roentgen Rays — Wilhelm Konrad von Roentgen (1845 1923), professor of physics at the University of Wurzburg, Germany, was working late on the night of November 3, 1893, after all his assistants had left the laboratory. He noticed that a fluorescent surface… … Dictionary of eponyms
Calorescence — (from the Lat. calor , heat ) is a term invented by John Tyndall to describe an optical phenomenon, the essential feature of which is the conversion of rays belonging to the dark infrared portion of the spectrum into the more refrangible visible… … Wikipedia
History of Physics — History of Physics † Catholic Encyclopedia ► History of Physics The subject will be treated under the following heads: I. A Glance at Ancient Physics; II. Science and Early Christian Scholars; III. A Glance at Arabian Physics; IV.… … Catholic encyclopedia
bruang — Sun Sun, n. [OE. sunne, sonne, AS. sunne; akin to OFries. sunne, D. zon, OS. & OHG. sunna, G. sonne, Icel. sunna, Goth. sunna; perh. fr. same root as L. sol. [root]297. Cf. {Solar}, {South}.] 1. The luminous orb, the light of which constitutes… … The Collaborative International Dictionary of English
Eurypyga helias — Sun Sun, n. [OE. sunne, sonne, AS. sunne; akin to OFries. sunne, D. zon, OS. & OHG. sunna, G. sonne, Icel. sunna, Goth. sunna; perh. fr. same root as L. sol. [root]297. Cf. {Solar}, {South}.] 1. The luminous orb, the light of which constitutes… … The Collaborative International Dictionary of English
