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geometric unsharpness |
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geometric unsharpness, image blur resulting from the finite size of the x-ray tube focal spot (as opposed to a point source). geometric unsharpness, n an impairment of image definition resulting from the geometric penumbra. See also penumbra, geometric and radiograph beam. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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