valonlämpötila

Valonlämpötila, or color temperature, is a characteristic of visible light that describes the spectral distribution of light emitted by a black body radiator at a given temperature. It is measured in Kelvin (K). While it is called "temperature," it is a descriptive term for the perceived color of the light and not a measure of the actual heat it produces. Lower color temperatures, such as those around 1800K, appear yellowish or reddish, similar to the flame of a candle or incandescent light bulbs. As the color temperature increases, the light appears to shift towards white and then bluish.

A neutral white light is typically around 4000K to 5000K, often found in office environments or retail spaces. Higher color temperatures, above 6500K, produce a cool, bluish-white light, reminiscent of daylight on a cloudy day or the light from some fluorescent lamps. Different applications benefit from specific color temperatures. For instance, warm color temperatures are often used for creating a cozy and relaxing atmosphere in homes, while cool color temperatures are preferred for tasks requiring high visual acuity and concentration. Understanding valonlämpötila is crucial in lighting design for achieving desired visual effects and functional illumination.