effective area

(of a radio telescope) see array.

effective area

[ə¦fek·tiv ′er·ē·ə] (chemical engineering) Absolute or cross-sectional area of process media involved in the process, such as the actual area of filter media through which a fluid passes, or the available surface area of absorbent contacted by a gas or liquid. (electromagnetism) Of an antenna in any specified direction, the square of the wavelength multiplied by the power gain (or directive gain) in that direction and divided by 4π (12.57).

effective area

The net area of an air outlet or air inlet through which air can pass; it is equal to the free area of the device times the coefficient of discharge.

单词	effective area
释义	effective area effective area (of a radio telescope) see array. effective area [ə¦fek·tiv ′er·ē·ə] (chemical engineering) Absolute or cross-sectional area of process media involved in the process, such as the actual area of filter media through which a fluid passes, or the available surface area of absorbent contacted by a gas or liquid. (electromagnetism) Of an antenna in any specified direction, the square of the wavelength multiplied by the power gain (or directive gain) in that direction and divided by 4π (12.57). effective area The net area of an air outlet or air inlet through which air can pass; it is equal to the free area of the device times the coefficient of discharge.
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