Alternate Definitions for Photosphere

The surface layer of the sun that we can see in the visible light range.

The atmospheric layer of the Sun or a starfrom which continuum radiation, especially optical, is emitted to space. Forthe Sun, the photosphere is about 500 km thick.

The atmospheric layer of the Sun or a star from which
continuum radiation, especially optical, is emitted to
space. For the Sun, the photosphere is about 500 km
thick.