Luminescence: meaning, definitions and examples
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luminescence
[ˌluː.mɪˈnɛs.əns ]
Definition
scientific phenomenon
Luminescence is the emission of light by a substance that has not been heated, as in fluorescence and phosphorescence. It is a process that occurs when electrons in a substance absorb energy, which then causes them to emit light as they return to their ground state. This phenomenon can be observed in various contexts, including biological systems, chemical reactions, and certain materials exposed to ultraviolet light. Luminescence is critical in fields such as chemistry, biology, and physics, where understanding light emission can lead to significant advancements in technology and research.
Synonyms
glow, light emission, radiance, shine.
Examples of usage
- The luminescence of the jellyfish is a fascinating example of bioluminescence.
- Scientists study the luminescence of minerals to understand their properties better.
- The luminescence effect in glow sticks is a popular demonstration of chemical reactions.
- Some organisms use luminescence to attract mates or warn predators.
Interesting Facts
Etymology
- The word comes from the Latin 'lumen', meaning light, and 'escent', which signifies a process or state.
- It was first used in the late 19th century to describe topics like fluorescent and phosphorescent materials.
- In chemistry, it describes the light emitted by a substance that isn't due to heat.
Science
- In biology, certain organisms, like fireflies and jellyfish, produce light through a chemical reaction called bioluminescence.
- Chemiluminescence is a form seen in glow sticks, where a chemical reaction causes the glow without heat.
- One of the most famous examples of luminescence is in fluorescent lights, which emit light when electricity passes through a gas.
Art
- Luminescence is often used in art through glow-in-the-dark paints, creating pieces that look different in light and darkness.
- Some artists incorporate LED technology to achieve luminescent effects in modern installations, blending art with technology.
- Artists like Van Gogh considered how light and color interacted, though not explicitly around luminescence, it's relevant to visual perception.
Technology
- Novel technologies, like organic light-emitting diodes (OLEDs), utilize luminescence for displays and screens, revolutionizing how we view images.
- Luminescent materials are being explored for use in solar panels to enhance energy absorption.
- Smart materials that change color when subjected to light or temperature are being developed, showcasing luminescence in practical applications.
Nature
- Deep-sea creatures often exhibit bioluminescence to attract mates or lure prey in the dark ocean depths.
- Certain minerals and rocks can exhibit luminescence when exposed to UV light, showcasing their natural beauty.
- Some fungi display bioluminescence, illuminating the forest floor and creating ethereal landscapes at night.
Translations
Translations of the word "luminescence" in other languages:
🇵🇹 luminescência
🇮🇳 दीप्ति
🇩🇪 Lumineszenz
🇮🇩 luminesensi
🇺🇦 люмінесценція
🇵🇱 luminescencja
🇯🇵 発光
🇫🇷 luminescence
🇪🇸 luminescencia
🇹🇷 lüminesans
🇰🇷 발광
🇸🇦 تألق
🇨🇿 luminescence
🇸🇰 luminescencia
🇨🇳 发光
🇸🇮 luminescenca
🇮🇸 ljóma
🇰🇿 люминесценция
🇬🇪 ლუმინესცენცია
🇦🇿 lüminesans
🇲🇽 luminescencia