英语词汇“jansky”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

jansky

jan·sky

J5016430 (jăn′skē)n. Abbr. Jy A unit of electromagnetic flux density often used in radio astronomy, equal to 10^-26 watts per square meter per hertz.

[After Karl Jansky (1905-1950), American radio engineer.]

jansky

(ˈdʒænskɪ) n, pl -skys (Astronomy) a unit of flux density equal to 10^–26 W m^–2 Hz^–1, used predominantly in radio and infrared astronomy. Symbol: Jy [C20: named after K. G. Jansky]

Jansky

(ˈdʒænskɪ) n (Biography) Karl Guthe 1905–50, US electrical engineer. He discovered a source of radio waves outside the solar system (1932) and pioneered radio astronomy

Translations

jansky

Jansky

jansky

(jan -skee) Symbol: Jy. The unit of flux density adopted by the IAU in 1973 and used throughout the spectral range, especially for radio and far-infrared measurements; it is named after Karl Jansky, who discovered radio emission from the Milky Way in 1932. One jansky is equal to 10^–26 watts per square meter per hertz. It is possible to calculate the equivalent flux density, S _ν, in janskys from a value of magnitude at the effective wavelength, λ_eff, appropriate to a particular optical or infrared filter (see table). For example, an R magnitude of 3.2 corresponds to a flux density at 0.7 μm of 2770 × 10^–0.4 ^× ^3.2 Jy i.e. 145 Jy. (The table gives the flux level for 0.0 magnitude.)

Jansky

a subsidiary unit of the spectral density of radiant flux. Used in radio astronomy, it is named in honor of K. Jansky (1905–50), an American scientist who discovered cosmic radio emission in 1932. Its abbreviation is Jy; 1 Jy = 10^–26 watt per square meter per hertz.

jansky

[′jans·kē] (astrophysics) A unit of measurement of flux density, in units of watt · meter^-2· hertz^-1; 1 jansky is 10^-26W · m^-2· Hz^-1. Abbreviated Jy.

单词	jansky
释义	jansky jan·sky J5016430 (jăn′skē)n. Abbr. Jy A unit of electromagnetic flux density often used in radio astronomy, equal to 10^-26 watts per square meter per hertz. [After Karl Jansky (1905-1950), American radio engineer.] jansky (ˈdʒænskɪ) n, pl -skys (Astronomy) a unit of flux density equal to 10^–26 W m^–2 Hz^–1, used predominantly in radio and infrared astronomy. Symbol: Jy [C20: named after K. G. Jansky] Jansky (ˈdʒænskɪ) n (Biography) Karl Guthe 1905–50, US electrical engineer. He discovered a source of radio waves outside the solar system (1932) and pioneered radio astronomy Translations jansky jansky Jansky jansky (jan -skee) Symbol: Jy. The unit of flux density adopted by the IAU in 1973 and used throughout the spectral range, especially for radio and far-infrared measurements; it is named after Karl Jansky, who discovered radio emission from the Milky Way in 1932. One jansky is equal to 10^–26 watts per square meter per hertz. It is possible to calculate the equivalent flux density, S _ν, in janskys from a value of magnitude at the effective wavelength, λ_eff, appropriate to a particular optical or infrared filter (see table). For example, an R magnitude of 3.2 corresponds to a flux density at 0.7 μm of 2770 × 10^–0.4 ^× ^3.2 Jy i.e. 145 Jy. (The table gives the flux level for 0.0 magnitude.) Jansky a subsidiary unit of the spectral density of radiant flux. Used in radio astronomy, it is named in honor of K. Jansky (1905–50), an American scientist who discovered cosmic radio emission in 1932. Its abbreviation is Jy; 1 Jy = 10^–26 watt per square meter per hertz. jansky [′jans·kē] (astrophysics) A unit of measurement of flux density, in units of watt · meter^-2· hertz^-1; 1 jansky is 10^-26W · m^-2· Hz^-1. Abbreviated Jy. Jansky Jan·sky (yahn'skē), Jan, Czech physician, 1873-1921. See: Jansky-Bielschowsky disease, Jansky classification. ThesaurusSeeflux unit
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