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The house above appears a light cream during midday, but seems to be bluish white here in the dim light before full sunrise. Note the color temperature of the sunrise in the background. Video camera operators can white-balance objects that are not white, downplaying the color of the object used for white-balancing. For instance, they can bring ...
The White bulbs produce white light with a color temperature of 2700 K (warm); the White Ambiance bulbs produce white light of color temperature adjustable between 2200 K (warm soft white) and 6500 K (daylight). The White and Color Ambiance range can generate white light adjustable from 2000 K to 6500 K, and also adjustable colored light.
Fluorescent lamps in various embodiments. Since their introduction as a commercial product in 1939, many different types of fluorescent lamp have been introduced. Systematic nomenclature identifies mass-market lamps as to overall shape, power rating, length, color, and other electrical and illuminating characteristics.
The color temperature of a white light source is the temperature in kelvins of a theoretical black body emitter that most closely matches the spectral characteristics (spectral power distribution) of the lamp. An incandescent bulb has a color temperature around 2800 to 3000 kelvins; daylight is around 6400 kelvins.
Those assigned to bright light therapy were made to sit in front of a fluorescent light box that produced extremely bright white light at an intensity of 10,000 lux for at least 30 minutes daily ...