# Flux Ratio

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The Flux Ratio calculator computes the ratio of the intensity of light coming from two celestial objects.

INSTRUCTIONS: Enter the following:

• (f1) This is the intensity of light associated with object 1.
• (f2) This is the intensity of light associated with object 2.

Flux Ratio:  The calculator returns the flux ratio.

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#### The Math / Science

The Flux Ratio  is the ratio of the intensity of light coming from two celestial objects.  Two different objects with light intensities (f1 and f2) have a corresponding flux ratio given by this formula:

flux ratio = f2/f1

The light intensities are in candelas (cd)