Fluorescent materials can only release energy by absorbing energy, and cannot generate energy by themselves.

The purpose of illuminating with a lamp is to provide energy for fluorescent substances.

The principle is that when high-energy short-wavelength light is injected into some substances,

Electrons in matter absorb energy and jump from the ground state to the high state.

Energy level; Because electrons are unstable at high energy levels,

It will jump from high energy level to low energy level, thus releasing energy.

Fluorescence, this is the fluorescence effect.