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SlideshowReport

Limb Darkening

Description
Limb Darkening
The Sun’s edge, or limb, appears distinctly darker and more orange than does its center, as seen from Earth (see
Figure 10-1). This occurs because we look through the same amount of solar atmosphere at all places. As a consequence,
we see higher in the Sun’s photosphere near its limb than when we look at its central regions. The higher photosphere
is cooler and, because it is a blackbody, darker and more orange than the lower, hotter region of the photosphere
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