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index ellipsoid |
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index ellipsoid [′in‚deks ə′lip‚sȯid] (optics) An ellipsoid whose three perpendicular axes are proportional in length to the principal values of the index of refraction of light in an anisotropic medium and point in the direction of the corresponding electric vector. Also known as ellipsoid of wave normals; indicatrix; optical indicatrix; polarizability ellipsoid; reciprocal ellipsoid. 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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| As the term implies, it is the strength borne by the crosslink network under uniaxial tension. Uniaxial monitors record vertical acceleration in 1 plane, and biaxial monitors record acceleration in 2 planes. The latter can be further divided into two types, those whose relation is one-way and unilateral (or unipolar or uniaxial to be precise) and those whose relation is a two-way or bilateral. |
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