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<a accesskey="3" href="page.php?w=Wood%27s_anomaly&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=optics">optics</a>, <b>Woods anomaly</b> refers to the rapid variation of <a href="page.php?w=Irradiance">light intensity</a> at diffracted spectral orders in metallic <a href="page.php?w=Diffraction_grating">gratings</a>. It was first observed by American physicist <a href="page.php?w=Robert_W._Wood">Robert W. Wood</a> in 1902. Initially unexplained by conventional grating theories, the effect was later understood to arise partly from the excitation of <a href="page.php?w=surface_plasmon_polariton">surface plasmon polariton</a>s</p><p>
<a accesskey="3" href="page.php?w=Wood%27s_anomaly&amp;p=2">3.Next</a>
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