نتایج جستجو برای: light color
تعداد نتایج: 506459 فیلتر نتایج به سال:
Investigating the effect of light color temperature on selective attention, error and human reaction time Abstract Background and aims: In humans, the reaction time limit is associated with several factors. It includes the time that takes to stimulate the sensory member, the stimulus effect is transmitted to the brain, then is perceived and the decision is made; consequently, the command resu...
One of the problems of natural yellow dyes (weld) is their low stability against light and their high fading rate. One of the main destructive factors in pale of color fibers and hand-woven carpet is the high-energy ultraviolet radiation which causes chemical bonds to break and optically damages of organic structures. In this study, the effect of some antioxidants (gallic acid, ascorbic acid) a...
This investigation explores the color appearance changes resulting from a contmuously presented adapting field. In every experiment. an incremental mixture of red and green monochromatic lights was superimposed on top of a steady red background field. On each experimental trial the intensities of the red background and the red increment were fixed: the subject adjusted the intensit! of the gree...
The research study the effect of changing light color on the length and weight composition of common sprat (C. caspia) catch in conical lift net with a mesh size of 8 mm (knot to knot). For this purpose, in January 2018 the sprat fish caught by three fishing vessels during 30 times of fishing operations at 50-40 m depth in Amirabad fishing port. The results showed that from total number of 2874...
A novel structured light method is described. The projection patterns are automatically adapted to the characteristics of the scene as part of the acquisition process, thus maximizing performance and minimizing the number of projection patterns. Color is used for light plane labeling. This allows to increase the dimension of the code space, hence the noise margins, without increasing the number...
objective: to study the in vitro color changes of three dental resin veneering materials when immersed in tea, coffee and tamarind extracts. materials and methods: the color changes of heat polymerized tooth colored acrylic resin (stellondetrey, b, f14, dpi dental products of india ltd, mumbai), auto polymerized tooth colored acrylic resin (dpi, b, qv5, dpi dental products of india ltd, mumbai)...
Solid state lighting is becoming a popular light source for color vision experiments. One of the advantages of light emitting diodes (LEDs) is the possibility to shape the target light spectrum according to the experimenter's needs. In this paper, we present a method for creating metameric lights with an LED-based spectrally tunable illuminator. The equipment we use consists of six Gamma Scient...
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