directivity

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

可算名詞 不可算名詞 稀用

(physics, electrical engineering) A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity.

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The antenna's directivity, which measures its performance compared to an isotropic antenna, improved after we redesigned the reflector.

詳細

意味（1）

(physics, electrical engineering) A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity.

意味（2）

(geology) Anisotropy in the propagation of earthquake waves in the direction of rupture.

意味（3）

(rare) Directionality

For higher degrees, the spatial integration tends to produce a cancellation and a rapid loss of visibility, although less rapidly for velocity measurement than for luminosity measurement, on account of the directivity of the velocity vector.

詳細

directivities （ 複数形 ）