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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]
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Border Art is a contemporary art practice rooted in the socio-political experience(s), such as of those on the U.S.-Mexico borderlands, or frontera.Since its conception in the mid-80's, this artistic practice has assisted in the development of questions surrounding homeland, borders, surveillance, identity, race, ethnicity, and national origin(s).
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Light art or the art of light is generally referring to a visual art form in which (physical) light is the main, if not sole medium of creation. Uses of the term differ drastically in incongruence; definitions, if existing, vary in several aspects.
The border is a dotted or dashed line where the dashes seem to move slowly sideways and up and down. This creates an illusion of ants marching in line as the black and white parts of the line start to move. Some prefer the term marquee selection, as the effect resembles the chaser lights of a marquee, and this
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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.