Chemiluminescence vs. Fluorescence — What's the Difference?

Chemiluminescence (also chemoluminescence) is the emission of light (luminescence) as the result of a chemical reaction. There may also be limited emission of heat.

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence.

Emission of light as a result of a chemical reaction.

The emission of electromagnetic radiation, especially of visible light, stimulated in a substance by the absorption of incident radiation and persisting only as long as the stimulating radiation is continued.

(chemistry) The emission of light as the result of a chemical reaction.

The property of emitting such radiation.

Luminescence resulting from a chemical reaction as the oxidation of luciferin in fireflies

The radiation so emitted.

(physics) The emission of light (or other electromagnetic radiation) by a material when stimulated by the absorption of radiation or of a subatomic particle.

The light so emitted.

A luminescence emitted by certain substances due to the absorption of radiation at one wavelength, and the almost instantaneous re-emission of radiation at another, usually longer wavelength. The re-radiation stops almost as soon as the incident radiation is halted, thus distinguishing this phenomenon from phosphorescence, in which re-radiation of light may continue for some time after the incident radiation is halted.

Light emitted during absorption of radiation of some other (invisible) wavelength