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词汇 photosphere
释义

Definition of photosphere in English:

photosphere

noun ˈfəʊtəsfɪəˈfoʊdəˌsfɪr
Astronomy
  • The luminous envelope of a star from which its light and heat radiate.

    〔天文〕光球

    Example sentencesExamples
    • The trip from the radiation zone to the photosphere - the yellowish-white sphere of light that we see - takes about one week.
    • Typically the corona is a million times fainter than the solar surface, which is why it cannot be seen except when the photosphere is mostly extinguished.
    • The answer comes from a fourth line of evidence on the deep-Earth composition: cosmic abundances of the elements deduced from analyses of chondritic meteorites and the solar photosphere.
    • Observing the solar photosphere in white light is traditionally carried out with neutral density filters.
    • The rotated elliptical shell could explain the polarization angle, but failed to match a feature in the supernova's flux that suggested an uneven absorption of light from the photosphere.

Derivatives

  • photospheric

  • adjective fəʊtəˈsfɛrɪk
    Astronomy
    • We investigate the dynamics of and the relations between small-scale penumbral and photospheric features near the outer penumbral boundary.
      Example sentencesExamples
      • We can, however, extrapolate the photospheric magnetic field into the corona.

Definition of photosphere in US English:

photosphere

nounˈfoʊdəˌsfɪrˈfōdəˌsfir
Astronomy
  • The luminous envelope of a star from which its light and heat radiate.

    〔天文〕光球

    Example sentencesExamples
    • The answer comes from a fourth line of evidence on the deep-Earth composition: cosmic abundances of the elements deduced from analyses of chondritic meteorites and the solar photosphere.
    • The rotated elliptical shell could explain the polarization angle, but failed to match a feature in the supernova's flux that suggested an uneven absorption of light from the photosphere.
    • Observing the solar photosphere in white light is traditionally carried out with neutral density filters.
    • The trip from the radiation zone to the photosphere - the yellowish-white sphere of light that we see - takes about one week.
    • Typically the corona is a million times fainter than the solar surface, which is why it cannot be seen except when the photosphere is mostly extinguished.
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