What is the difference between white light and warm white light?

The biggest difference between them is the different color temperature.

1, positive white light means that the color temperature is around 6500K, also called (cold white).

2. warmwhite light means: the color temperature is around 3000K, which is called warm white in English (similar to the light emitted by the most traditional incandescent bulbs in the past), but it is whiter, so it is called warm white light. Mostly used in bedrooms to create a warm atmosphere.

Extended data:

(1) 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).

(2) If the light emitted by a light source contains the same spectral components as the light emitted by a black body at a certain temperature, that is, the color of the light emitted by a bulb with a certain k color temperature, such as 100W, is the same as the color of the light emitted by an absolute black body at 2527K, then the color temperature of the light emitted by this bulb is: 2527 K+273 K = 2800 K. ..

Color temperature is a temperature measurement method, which is usually used in physics and astronomy. This concept is based on a fictional black object, which emits different colors when heated to different temperatures, and its objects appear in different colors. Just like you heat an iron block, the iron block turns red first, then yellow, and finally white.