Which is brighter, warm light or cold light with the same power in energy-saving lamps? That is, which light efficiency is higher?

Energy-saving lamps with the same shape and power have higher light efficiency in warm light than in cold light.

This is because among the red, green and blue powders used in energy-saving lamps, the blue powder has the lowest efficiency of being "lit" by eyes, and it is not used (or rarely used) in warm lamps, but about 65,438+05% is used in electroluminescence.

The energy-saving lamps with the same shape and power are darker in warm light than in cold light only by eyes without instruments; This: first, psychological factors, and second, there are some differences between "original data" and reality.