Lighting Terms

Color Temperature

Color temperature is the degree of warmness or coolness of a light source, measured in kelvins (K). Warm light is in the lower temperatures (2,700-3,000K) and can appear yellowish, similar to a standard incandescent bulb. Cool light is in the higher temperatures (4,000-6,500K) can appear more bluish. The color temperature is the color of the …

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Brightness (Lumens)

Brightness, measured in lumens, is the measurement of the luminous flux from a light source. Brightness tells us how much light is being radiated by a particular light source. Brightness was previously associated with the power consumed, i.e. 60 Watts vs. 100 Watts. The principle that an increase in a light’s power consumption meant an …

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