“beam”的概念、定义、翻译、参考文献-科学参考

beam

Physics

A group of rays moving in an organized manner. It may consist of particles (e.g. an electron beam) or of electromagnetic radiation (e.g. a radar beam).

Astronomy

1. A stream of radiation or particles confined to a narrow range of directions.

2. An imaginary stream of radiation originating at the focus of a telescope (or central point of an array of telescopes) and illuminating the volume of space from which the telescope or array can receive radiation. The term is commonly used to refer to the patch of sky to which the telescope is sensitive. Optical and infrared telescopes generally have a simple circular beam, while radio telescopes (especially interferometers) may have beams of a complex shape. See also Fan Beam.

Electronics and Electrical Engineering

A narrow stream of essentially unidirectional electromagnetic radiation (as in a radiowave) or charged particles (as in an electron beam).

单词	beam
释义	beam Physics A group of rays moving in an organized manner. It may consist of particles (e.g. an electron beam) or of electromagnetic radiation (e.g. a radar beam). Astronomy 1. A stream of radiation or particles confined to a narrow range of directions. 2. An imaginary stream of radiation originating at the focus of a telescope (or central point of an array of telescopes) and illuminating the volume of space from which the telescope or array can receive radiation. The term is commonly used to refer to the patch of sky to which the telescope is sensitive. Optical and infrared telescopes generally have a simple circular beam, while radio telescopes (especially interferometers) may have beams of a complex shape. See also Fan Beam. Electronics and Electrical Engineering A narrow stream of essentially unidirectional electromagnetic radiation (as in a radiowave) or charged particles (as in an electron beam).
随便看	South America South American Plate South Atlantic Anomaly South-East Asia Treaty Organization South-east Pacific Plate Southerly Burster southerly burster Southern African Large Telescope southern annular mode Southern Astrophysical Research Telescope Southern blotting Southern Cross southern lights Southern Ocean southern oscillation Southern Reference Stars Southern Sky Survey South Korea South Pole Telescope South Pole–Aitken Basin South Sea Bubble South Sudan South Vietnam South-West Africa South West Africa People’s Organization