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ASTM E507-13
ASTM E507-13 Standard Test Method ...
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ASTM E877-13
ASTM E877-13 Standard Practice for ...
1.1 ,This test method covers the analysis of stress in glass by means of a polarimeter based on the principles developed by Jessop and Friedel (1, 2).2 Stress is evaluated as a function of optical retardation, that is expressed as the angle of rotation of an analyzing polarizer that causes extinction in the glass.