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How does "white" light sources emit energy?
at all or almost all visible wavelengths, but not always in an ideal proportion.
What is in the category of white light?
Variations as warm or cool
describes how a lamp appears when lighted. Color temperature is measured in kelvin (k), a scale that starts at absolute zero.
expresses how colors appear under a given light source
Color Rendering Index (CRI)
the most accepted method to determine the color-rendering ability of a light source is a rating system
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