visible light rays
11actinic rays — n pl radiation (as in the violet and ultraviolet parts of the spectrum) having marked photochemical action * * * light rays that produce chemical changes. In general, light rays have more of this property the farther they are from the center of… …
12Roentgen rays — X ray X ray, X ray X ray([e^]ks r[=a] ), n. [so called by its discoverer because of its enigmatical character, x being an algebraic symbol for an unknown quantity.] (Physics) originally, any of the rays produced when cathode rays strike upon… …
13X rays — X ray X ray, X ray X ray([e^]ks r[=a] ), n. [so called by its discoverer because of its enigmatical character, x being an algebraic symbol for an unknown quantity.] (Physics) originally, any of the rays produced when cathode rays strike upon… …
14Roentgen 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… …
15Crepuscular rays — (  /krɨˈ …
16Soft light — Hard light redirects here. For details of the concept of hard and soft light in Red Dwarf, see Arnold Rimmer. Natural soft lighting from a sunrise in Temanggung Regency, Central Java, Indonesia Soft light refers to light that tends to wrap around …
17Anticrepuscular rays — are similar to crepuscular rays, but seen opposite the sun in the sky. Sunlight travels in straight lines, but the projections of these lines on Earth s spherical atmosphere are great circles. Hence, straight line crepuscular rays from a setting… …
18Sand Island Light — Infobox Lighthouse caption = Sand Island lighthouse 1962 location = Sand Island, Alabama coordinates = coord|30.1966|N|88.0534|W yearbuilt = 1838 yearlit = 1873 automated = 1921 yeardeactivated = 1933 foundation = Stone construction = Brownstone… …
19Obscure 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.… …
20Northern Light (spacecraft) — Northern Light Northern Light Lander on Mars (artist s impression) Operator Northern Light Consortium Major contractors Thoth Technology Inc. Mi …
