The release of energy by particles of matter that have absorbed energy is called luminescence.

Here's a breakdown:

* Luminescence: The emission of light from a substance not caused by heat.

* Absorption: The process where particles of matter take in energy, often from light, heat, or other forms of radiation.

There are different types of luminescence, depending on the source of the absorbed energy and the mechanism of light emission:

* Fluorescence: The emission of light that occurs immediately after absorption of energy.

* Phosphorescence: The emission of light that continues after the source of energy has been removed.

* Chemiluminescence: The emission of light as a result of a chemical reaction.

* Bioluminescence: The production of light by living organisms.

Let me know if you'd like to know more about any of these types of luminescence!