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Luminescence occurs in some minerals when they are exposed to low-powered sources of ultraviolet or infrared electromagnetic radiation (for example, portable UV lamps) at atmospheric pressure and …

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.

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.

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.

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

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 …

3 days ago · As she learned more about luminescence in nature, she began to reflect on what real light truly is. Nature’s light has its own mechanisms and its own meaning.