maser
Noun: 1. A device that generates and amplifies coherent electromagnetic radiation in the microwave region of the spectrum: A maser is a scientific instrument that produces a very pure, single-frequency, and powerful beam of microwave radiation. It operates on the principle of stimulating molecules or atoms to release energy. * The laboratory used a hydrogen maser as an extremely precise atomic clock. * Astronomers detected the first interstellar molecules using a maser amplifier on a radio telescope.
The word "maser" is a technical term used primarily in physics, engineering, and astronomy. It functions as a countable noun. * It is often preceded by a descriptor indicating the specific type or working substance (e.g., hydrogen maser, ammonia maser, astrophysical maser). * It can be used as a subject or object in a sentence describing scientific equipment or phenomena.
- As a subject:
- The maser provided a stable frequency reference for the experiment.
- A natural maser in space can be millions of times brighter than a man-made one.
- As an object:
- Scientists have developed a new maser that operates at room temperature.
- The signal was too weak to detect without a maser amplifier.
- "Astrophysical maser" or "cosmic maser": Refers to naturally occurring maser emissions from molecules in space, often found in star-forming regions or around evolved stars.
- The discovery of water masers helped map the structure of distant galaxies.
- Laser (noun): An optical maser; a device that generates coherent light (visible or infrared radiation) based on the same fundamental principle of stimulated emission. The term "laser" is a more common and widely known counterpart to "maser."
- While a maser amplifies microwaves, a laser amplifies light.
- Microwave amplifier (noun phrase): A descriptive synonym, though less precise as it may not imply the coherent nature of the emission.
- Coherent microwave source (noun phrase): A technical description of the device's function.
The word "maser" is an acronym for "Microwave Amplification by Stimulated Emission of Radiation." Its meaning is highly specific and technical. It does not have common idiomatic or figurative uses. Its primary meaning relates directly to the device itself and the coherent radiation it produces.
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an acronym for microwave amplification by stimulated emission of radiation; an amplifier that works on the same principle as a laser and emits coherent microwave radiation
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