band of illumination
21optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
22Organic solar cell — An organic photovoltaic cell (OPVC) is a photovoltaic cell that uses organic electronics a branch of electronics that deals with conductive organic polymers or small organic molecules[1] for light absorption and charge transport. The plastic… …
23painting, Western — ▪ art Introduction history of Western painting from its beginnings in prehistoric times to the present. Painting, the execution of forms and shapes on a surface by means of pigment (but see also drawing for discussion of depictions in …
24Architecture of the night — De Volharding Building, The Hague, 1928 by Jan Buijs, photographed in 1930 …
25Multijunction photovoltaic cell — Multi junction solar cells or tandem cells are solar cells containing several p n junctions. Each junction is tuned to a different wavelength of light, reducing one of the largest inherent sources of losses, and thereby increasing efficiency.… …
26Light pollution — This article is about light pollution in the visible spectrum. For information on pollution in the radio spectrum, see radio spectrum pollution. This time exposure photo of New York City at night shows skyglow, one form of light pollution …
27S-300 (missile) — Not to be confused with S 300VM. SA 10 redirects here. For the channel interface for the PDP 10 computer, see Systems Concepts. Grumble redirects here. For other uses, see Grumble (disambiguation). For the Project Apollo test mission, see A 105… …
28Earth, Wind & Fire — Infobox Musical artist Name = Earth, Wind Fire Img capt = Img size = Background = group or band Origin = Chicago, Illinois, USA Genre = R B, funk, soul, disco Years active = 1969–present Associated acts = Phenix Horns Label =Warner Bros.,… …
29Shell (projectile) — This article is about the artillery projectile. For the small arms ammunition, see Shotgun shell. Some sectioned shells from the First World War. From left to right: 90 mm fragmentation shell, 120 mm pig iron incendiary shell, 77/14 model 75 mm… …
30Sky Bow — The Sky Bow series of surface to air missiles were developed by the Republic of China (Taiwan) and are currently in used for air defense purposes. Contents 1 Development 2 Sky Bow I 2.1 General characteristics …
