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turbulence |
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turbulence, n casting term used to denote irregular flow of metal into a mold. May result in porosity. 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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On Mars, a desert planet where dust devils are common and unusually large, the whirlwinds result from severe atmospheric turbulence. The Ohio native spent his career conducting research on the physics of propagation of light through atmospheric turbulence and a technique called laser guidestar adaptive optics that corrects distortion caused by the atmosphere. The turbulence they generate causes receivers to lose the signal through an effect known as scintillation, similar to the apparent twinkling of stars caused by atmospheric turbulence. |
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