LUMINESCENCE Meaning and
Definition
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Luminescence is a phenomenon exhibited by certain materials and substances that emit light without producing significant heat. It refers to the emission of light resulting from the energy absorbed by the material, which then re-emits the energy in the form of visible light. This emission of light can occur due to various processes, such as chemical reactions, electrical stimulation, or exposure to radiation.
Luminescence can be categorized into two main types: fluorescence and phosphorescence. Fluorescence occurs when a material absorbs energy and re-emits it immediately, typically within a very short period of time, sometimes even instantaneously. On the other hand, phosphorescence refers to the delayed emission of light that persists even after the removal of the excitation source. Phosphorescent materials continue to emit light for a longer time due to the trapping of excitation energy in certain energy levels.
Luminescence is a widely observed phenomenon in both natural and artificial substances. It is commonly found in various biological systems, such as fluorescent proteins in certain organisms or the glow emitted by certain marine organisms. Additionally, luminescent materials find applications in diverse fields including lighting technologies, biomedical imaging, chemical analysis, and electronic displays.
Overall, luminescence is the emission of light from a material as a result of energy absorption, providing an intriguing scientific phenomenon with a broad range of practical applications.
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Etymology of LUMINESCENCE
The word "luminescence" is derived from the Latin word "lumen", which means "light". The word "luminescence" combines "lumen" with the suffix "-escence", which denotes a state or process. Therefore, "luminescence" refers to the emission of light, particularly the non-thermal emission of light produced by various processes such as chemical reactions, radiation, or electrical energy.
Idioms with the word LUMINESCENCE
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bacterial luminescence
The idiom "bacterial luminescence" refers to the natural ability of certain bacteria to emit light. It is a process known as bioluminescence, wherein the bacteria produce light through the oxidation of a light-emitting molecule within their cells. This phenomenon is often observed in various marine organisms as well.
Similar spelling words for LUMINESCENCE
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