| 31. | Optically, donnayite is biaxial negative with a 2v ( measured ) ranging from 0R -30R .
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| 32. | Two-dimensional elements with a thin third dimension have little of either but can resist biaxial traction.
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| 33. | Interference figures yield addition on the concave side of the isogyers, causing ulexite to be biaxial positive.
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| 34. | For this reason, birefringent materials with three distinct refractive indices are called " biaxial ".
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| 35. | Viewing the interference figure is a foolproof way to determine if a mineral is optically uniaxial or biaxial.
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| 36. | Since it is orthorhombic, marthozite is biaxial, meaning that it has three different indices of refraction.
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| 37. | A surprising system of intersecting Cherenkov rings in a biaxial crystal at precisely defined particle energies was predicted.
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| 38. | It was a major modification of the BA-20, using a triaxial truck chassis instead of biaxial.
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| 39. | The representation of this phenomenon becomes rather complex due to the biaxial and internal pressure load and structural configuration.
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| 40. | Steatite ceramics are low-cost biaxial porcelains of nominal composition ( MgO ) 3 ( SiO 2 ) 4.
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