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<a accesskey="3" href="page.php?w=Wave_interference&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=physics">physics</a>, <b>interference</b> is a phenomenon in which two <a href="page.php?w=coherence_%28physics%29">coherent</a> <a href="page.php?w=wave">wave</a>s are combined by adding their intensities or displacements with due consideration for their <a href="page.php?w=phase_%28waves%29">phase difference</a>. The resultant wave may have greater amplitude (<b>constructive interference</b>) or lower amplitude (<b>destructive interference</b>) if the two waves are in phase or out of phase, respectively.Interference effects</p><p>
<a accesskey="3" href="page.php?w=Wave_interference&amp;p=2">3.Next</a>
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