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<p>advances as well, such as <a href="page.php?w=intensity_%28physics%29">intensity</a>, <a href="page.php?w=wavelength">wavelength</a>, or <a href="page.php?w=Polarization_%28waves%29">polarization</a>. This process is repeated with as many rays as are necessary to understand the behavior of the system.</p>

<p><big>Uses</big></p>
<p><big>Astronomy</big></p>
<p>Ray tracing is being increasingly used in astronomy to simulate realistic images of the sky. Unlike conventional simulations, ray tracing does not use the expected or calculated <a href="page.php?w=point_spread_function">point spread function</a></p><p>
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