Luminescence is a spontaneous emission of radiation from an electronically or vibrationally excited species not in thermal equilibrium with its environment. [1]

Luminescence, emission of light by certain materials when they are relatively cool. It is in contrast to light emitted from incandescent bodies, such as burning wood or coal, molten iron, and wire heated by an …

May 14, 2023 · Luminescence is light emission that does not result from heat, unlike incandescence. It occurs when electrons absorb energy and release it as light while returning to a lower energy state.

The meaning of LUMINESCENCE is the low-temperature emission of light (as by a chemical or physiological process); also : light produced by luminescence. How to use luminescence in a sentence.

Technically, luminescence refers to spontaneous emission of electromagnetic radiation (photons) from a material that absorbs energy from a source (external stimulus).

Jul 20, 2025 · Luminescence describes the emission of light from a substance for any reason other than heat. This phenomenon is often called “cold light” because it can occur at normal or cool temperatures.

The ocean often emits a visible glow, or luminescence, which extends for miles at night. They toil over the perfect shade of pigment, the architectural details of an elaborate building, the luminescence of a …

Luminescence is a fascinating phenomenon where substances emit light without the need for high temperatures. Unlike thermal radiation, which is light emitted due to heat, luminescence occurs at …

May 27, 2023 · That's an example of what we call photoluminescence: luminescence made by light. But you can make things give off light by exciting their atoms with many other kinds of energy.

Luminescence can occur in different states of matter, including solids, liquids, and gases, each exhibiting unique characteristics. Unlike incandescence, which is light produced by heat, …