intensity of incandescence
21Pyrometer — An optical pyrometer A sailor checking the temperature of a ventilation s …
22Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
23Paolo Veronese — Self portrait Born 1528 Died 1588 …
24Neon lamp — See also: Neon lighting A General electric NE 34 glow lamp, manufactured circa 1930. A neon lamp (also neon glow lamp) is a miniature gas discharge lamp that typically contains neon gas at a low pressure in a glass capsule. Only a thin region… …
25Limelight — For other uses, see Limelight (disambiguation) …
26List of optical topics — Probably some Wikipedia articles on topics in optics are not yet listed on this page. If you cannot find the topic you are interested in on this page, the article may nonetheless exist; you can try to find it using the Search box, or look in and… …
27Nernst lamp — Nernst lamp, complete, model B with cloche, DC lamp 0.5 ampere, 95 volts, by courtesy of Landesmuseum für Technik und Arbeit in Mannheim, Germany, (Engl.: State Museum of Technology and Labour, Mannheim) …
28limelight — limelighter, n. /luym luyt /, n. 1. Theat. a. (formerly) a lighting unit for spotlighting the front of the stage, producing illumination by means of a flame of mixed gases directed at a cylinder of lime and having a special lens for concentrating …
29meteor and meteoroid — ▪ astronomy Introduction respectively, a glowing streak in the sky (meteor) and its cause, which is a relatively small stony or metallic natural object from space (meteoroid) that enters Earth s atmosphere and heats to incandescence. In modern… …
30Puyehue-Cordón Caulle — Puyehue Volcano as seen from the south side of Puyehue Lake Elevation 2,236 m …
