A polariscope is an optical instrument that reveals internal strain in glass objects by analyzing how they interact with polarized light. When external stress is applied to a glass object, it creates internal strain, altering the way light passes through it. By observing the light patterns using a polariscope, engineers and quality control professionals can identify stress points and strain distribution within the glass. This analysis is crucial for ensuring the structural integrity and safety of glass products, aiding in defect detection, material improvement, and compliance with industry standards.
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