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anisotropy |
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anisotropy [¦a‚nī′sä·trə·pē] (astronomy) The departure of the cosmic microwave radiation from equal intensity in all directions. (botany) The property of a plant that assumes a certain position in response to an external stimulus. (physics) The characteristic of a substance for which a physical property, such as index of refraction, varies in value with the direction in or along which the measurement is made. Also known as aeolotropy; eolotropy. (zoology) The property of an egg that has a definite axis or axes. 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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Moreover, being a welded piece, it presents a structural anisotropy that shortens its lifespan, and therefore its reliability in time. Since COBE's 4-year mission, scientists have used other spacecraft, such as NASA's Wilkinson Microwave Anisotropy Probe (WMAP), to refine the microwave-background measurements and thereby gauge specific properties of the universe, such as its age and composition, with unprecedented accuracy (SN: 2/15/2003, p. However, for the collision of light particles with equal masses, energy and momentum conservation leads to the well known "step" distribution of final energies extending down to zero and to an anisotropy of scattering in the laboratory (LAB) coordinate system. |
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