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<a accesskey="3" href="page.php?w=Phase-contrast_imaging&amp;p=2">3.Next</a>
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<p><b>Phase-contrast imaging</b> is a method of <a href="page.php?w=image">imaging</a> that has a range of different applications. It measures differences in the <a href="page.php?w=refractive_index">refractive index</a> of different materials to differentiate between structures under analysis. In conventional <a href="page.php?w=Light_microscopy">light microscopy</a>, phase contrast can be employed to distinguish between structures of similar transparency, and to examine crystals on the basis of their <a href="page.php?w=birefringence">double refraction</a>.</p><p>
<a accesskey="3" href="page.php?w=Phase-contrast_imaging&amp;p=2">3.Next</a>
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