Surface Brightness

Surface Brightness

The overall brightness of an extended astronomical object such as a galaxy, star cluster, or nebula, can be measured by its total magnitude, integrated magnitude or integrated visual magnitude; a related concept is surface brightness, which specifies the brightness of a standard-sized piece of an extended object.

Read more about Surface Brightness:  General Description, Calculating Surface Brightness, Relationship To Physical Units

Famous quotes containing the words surface and/or brightness:

    The surface of the earth is soft and impressible by the feet of men; and so with the paths which the mind travels. How worn and dusty, then, must be the highways of the world, how deep the ruts of tradition and conformity!
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    on thy brow
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