News tagged with color

Related topics: light

FDA suggests limits on lead in cosmetics

(HealthDay)—The U.S. Food and Drug Administration has suggested setting a limit on how much lead can be in cosmetics ranging from lipstick and eye shadow to blush and shampoo.

Dec 23, 2016
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Sensory connections spill over in synesthesia

Neuroscientists at Emory University have found that people who experience a mixing of the senses, known as synesthesia, are more sensitive to associations everyone has between the sounds of words and visual shapes. The results ...

Sep 13, 2016
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What color room should you study in?

Struggling with that last minute exam-prep? Curtin researchers are here to save you, finding that brightly colored rooms can boost your concentration levels.

Jun 20, 2016
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Color

Color or colour (see spelling differences) is the visual perceptual property corresponding in humans to the categories called red, green, blue and others. Color derives from the spectrum of light (distribution of light power versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra. By defining a color space, colors can be identified numerically by their coordinates.

Because perception of color stems from the varying spectral sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined and quantified by the degree to which they stimulate these cells. These physical or physiological quantifications of color, however, do not fully explain the psychophysical perception of color appearance.

The science of color is sometimes called chromatics, colorimetry, or simply color science. It includes the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what we commonly refer to simply as light).

This text uses material from Wikipedia, licensed under CC BY-SA

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