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  • Photosphere - Wikipedia
    The photosphere is a star's outer shell from which light is radiated It extends into a star's surface until the plasma becomes opaque, equivalent to an optical depth of approximately 2 ⁄ 3, [1] or equivalently, a depth from which 50% of light will escape without being scattered
  • 光球 - 百度百科
    光球（photosphere），是太阳大气最低的一层，即一般用白光所观测到的太阳表面，厚度500公里左右。 我们接收到的太阳能量基本上是光球发出的。 因此，太阳的光谱实际上就是光球的光谱。
  • Photosphere | Sun’s Surface, Solar Radiation Solar Flares | Britannica
    Photosphere, visible surface of the Sun, from which is emitted most of the Sun’s light that reaches Earth directly Since the Sun is so far away, the edge of the photosphere appears sharp to the naked eye, but in reality the Sun has no surface, since it is too hot for matter to exist in anything
  • NASA Marshall Solar Physics
    The photosphere is the visible surface of the Sun that we are most familiar with Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick (very, very, thin compared to the 700,000 km radius of the Sun)
  • Photosphere - NSO - National Solar Observatory
    The photosphere radiates the light we see from the Sun This is the first and bottommost layer of the Sun’s atmosphere It’s the part of the Sun we are most familiar with because it represents the visible “surface” we see
  • The suns atmosphere: Photosphere, chromosphere and corona
    The photosphere is the lowest layer of the sun's atmosphere — the innermost layer we can observe directly The term photosphere means "sphere of light" and is the layer where most of the
  • The Solar Photosphere - Stanford University
    The photosphere is the lowest layer of the solar atmosphere It is essentially the solar "surface" that we see when we look at the Sun in "white" (i e regular, or visible) light When we observe sunspots and faculae (bright little cloud-like features) we are observing them in the photosphere
  • Photosphere - an overview | ScienceDirect Topics
    The photosphere refers to the thin layer at the surface of the Sun that is observed in white light It is the range of heights from which photons directly escape and can be defined as the height range of approximately 300 km for visible wavelengths
  • The Photosphere - the Surface of the Sun - Windows to the Universe
    The photosphere is one of the coolest regions of the Sun (6000 K), so only a small fraction (0 1%) of the gas is ionized (in the plasma state) The photosphere is the densest part of the solar atmosphere, but is still tenuous compared to Earth's atmosphere (0 01% of the mass density of air at sea level) The photosphere looks somewhat boring at
  • The Photosphere of the Sun - University of Rochester
    The point where it appears to become completely opaque is called the photosphere Thus, the photosphere may be thought of as the imaginary surface from which the solar light that we see appears to be emitted





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