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13
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Anisotropic quartz rotated through 180°between crossed polarisers. the intensity of light transmitted through the analyser varies as a function of the angle of rotation of the quartz sample in the plane of the filters. At certain orientations, no light is transmitted. These 'extinction positions' are found at 90° intervals. From TLP Atomic Scale Structure of Materials |
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99
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Interface growth: transition from planar front to cellular front. |
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100
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Interface growth: transition from cellular front to dendritic interface. |
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101
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Interface growth: Transition from planar front to dendritic interface. |
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102
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Dendrite formation - thermocouple |
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103
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Dendrite formation - low Co |
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104
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Dendrite formation - high Co |
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105
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Dendrite formation - effect of G & V on branching; low Co |
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106
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Dendrite formation - effect of G & V on branching; low Co. 1.2 times real speed |
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107
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Dendrite formation - effect of G & V on branching; low Co. 2.4 times real speed |