Who knows that the color temperature of led spotlights is 3000k?

Color temperature 3000K refers to the color of the light emitted by the bulb, which is the same as that of the absolute black body at 2727K, and is used to represent the color of light.

Color temperature is a unit of measurement, indicating the color components contained in light. Theoretically, color temperature refers to the color of an absolute blackbody heated from absolute zero (273℃).

After heating, the black body gradually changes from black to red, yellow and white, and finally emits blue light. When heated to a certain temperature, the spectral component of the light emitted by the blackbody is called the color temperature at this temperature, and the unit of measurement is "K" (Kelvin). If the light emitted by a light source has the same spectral components as the light emitted by a black body at a certain temperature, it is called a certain K color temperature.

Extended data:

In blackbody radiation, the color of light changes with temperature, and blackbody presents a gradual change process from red, orange red, yellow, yellow white, white and blue white. When the color of light emitted by a light source looks the same as the color of light emitted by a blackbody at a certain temperature, the temperature of the blackbody is called the color temperature of the light source.

The higher the temperature of the "black body", the more blue components and the less red components in the spectrum. For example, the light color of incandescent lamp is warm white, and its color temperature is expressed as 2700K, while the color temperature of fluorescent lamp is expressed as 6000 K.

The color of light emitted by some discharge light sources is not exactly the same as that emitted by blackbody at various temperatures. So in this case, the concept of "correlated color temperature" is used. When the color of the light emitted by the light source is closest to the color of the light emitted by a blackbody at a certain temperature, the temperature of the blackbody is called the correlated color temperature of the light source.

Light sources with different color temperatures have different light colors and bring different feelings:

1 The light less than 3000K is white with red, and it feels very warm.

The light of 2,3000 to 5,000 K is white and feels very refreshing.

The color of the lamp above 3.5000K is white plus blue. What I feel is cold.

Color temperature and brightness: under the irradiation of high color temperature light source, if the brightness is not high, it will give people a cold atmosphere; Under the irradiation of low color temperature light source, too high brightness will give people a sultry feeling. Contrast between light and color: When two kinds of light sources with large differences in light and color are used in the same space, the contrast will have a hierarchical effect. When the contrast between light and color is large, the brightness level can be obtained at the same time.

Baidu encyclopedia-color temperature