impedance

nounB2

Định nghĩa theo từ loại

Danh từ

noun

Plural noun:

impedances

1.
(countable, uncountable)The act of impeding; that which impedes; a hindrance.
2.
(countable, uncountable)(physics) A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, and inductive and capacitive reactances; the ratio of voltage to current treated as complex quantities.
3.
(physics) A quantity analogous to electrical impedance in some other energy domain

Từ liên quan

Cùng gốc / liên quan

bioimpedanceimmittancemagnetoimpedancemicroimpedancephotoimpedancetuboimpedanceacoustic impedancecardioimpedancecharacteristic impedanceimage impedanceimpedance coilimpedancemetryimpedance mismatchimpedance of free spaceimpedance plethysmographyelectrical impedance tomographyradiation impedanceimpediment

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Nguồn gốc từ

From impede + -ance. In physics1 and physics2 it was Oliver Heaviside, 1886.