VM2Int:

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   Converts apparent visual magnitude to intensity in watts/m^2.
   The apparent visual magnitude of the Sun is -26.85.

   Since version 3.
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   Form:
   i = VM2Int( v )
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   ------
   Inputs
   ------
   v                 (:)    Visual magnitude

   -------
   Outputs
   -------
   i                 (:)    Intensity (watts/m^2)

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   References: Berry, M. (1981). Principles of cosmology and 
               gravitation. Cambridge University Press,
               Cambridge, England, 10.
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Children:

Common: Graphics/Plot2D