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Luminescence is the "spontaneous emission of radiation from an electronically or vibrationally excited species not in thermal equilibrium with its environment". A luminescent object is emitting "cold light", in contrast to "incandescence", where an object only emits light after heating.
Jun 4, 2022 · While friction, tearing, and crushing release some heat, the light does not come from incandescence. So, another name for triboluminescence is cold light. The flashes of light come in a variety of colors. The most common colors are blue, white, yellow, orange, and red. Sometimes the emitted light extends beyond the visible spectrum.
noun. 1. : light emitted by any body whose temperature is below that of incandescence compare luminescence. 2. : visible light from whatever source unaccompanied by appreciable amounts of infrared and having therefore little heating effect.
Cold light. Cold light is also known as luminescence. It is light that is emitted when things are cold. Light emitted when things get hot is called incandescence – for example, the light from a Bunsen burner, a standard light bulb or an electric cooker when hot.
6 days ago · noun. light emitted at low temperatures from a source that is not incandescent, such as fluorescence, phosphorescence, bioluminescence, or triboluminescence. Collins English Dictionary. Copyright © HarperCollins Publishers. Word Frequency. cold light in American English.
Sep 5, 2005 · Unlike a light bulb, which produces a lot of heat in addition to light, a firefly's light is "cold light" without a lot of energy being lost as heat. This is necessary because if a...
Dec 15, 2021 · In effect, they make cold light rather than the hot light produced by older-style, energy-wasting bulbs. Creatures like fireflies make their light through a chemical process using a substance called luciferin. The broad name for the various different ways of making light by exciting the atoms inside things is luminescence.
