A light beam propagating through hazy air loses intensity along its path,
$I = I_{0} \cdot e^{-K \cdot L}$ | $K = \frac{-1}{L} \cdot \text{ln} \left( \frac{I}{I_{0}} \right)$ |
$I$ | intensity of light after a path L |
$I_{0}$ | intensity of light at the source |
$K$ | extinction coefficient in m-1 |
$L$ | path in m |