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The most common type of floodlight was the metal-halide lamp, which emits a bright white light (typically 75–100 lumens/Watt). Sodium-vapor lamps are also commonly used for sporting events, as they have a very high lumen to watt ratio (typically 80–140 lumens/Watt), making them a cost-effective choice when certain lux levels must be provided. [4]
Pictures with messages visible under blacklight. A blacklight poster or black light poster is a poster printed with inks which fluoresce under a blacklight. [1] The inks used contain phosphors which cause them to glow when exposed to ultraviolet light emitted from blacklights.
Closely associated art forms are projectors, 3-D projection, multi-media, video art, and photography where light technology projects images rather than using light as the medium. Large light festivals and events have helped to develop the use of light on large canvases such as architectural facades, building projections, the flood lighting of ...
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Above the sea is a bright sunburst, with the light of the sun illuminating the surrounding clouds and bright rays projecting beyond the edges of the canvas. [20] Watts's composition echoes J. M. W. Turner 's 1843 treatment of the same topic, Light and Colour (Goethe's Theory) – The Morning after the Deluge – Moses Writing the Book of ...
According to Goethe's concept, yellow undergoes a transition of light becoming darker when light reaches its peak; just as the Sun shines in the sky, it develops into a colourless white light. But the light deepens and evolves the yellow into an orange and then finally to a ruby-red hue. [ 5 ]
Black light paint or black light fluorescent paint is luminous paint that glows under a black light. It is based on pigments that respond to light in the ultraviolet segment of the electromagnetic spectrum. The paint may or may not be colorful under ordinary light. Black light paint should not be confused with phosphorescent (glow-in-the-dark ...
Elmer is an elephant with yellow, orange, red, pink, purple, blue, green, black and white squares arranged as a patchwork. He has a cheerful and optimistic personality, and he loves practical jokes. The stories are suitable for early exploration of cultural diversity. One day, Elmer decides that he wants to look like all the other elephants as ...