Abstract
Geometric moiré is an optical method of experimental mechanics for measurement of displacements and slopes. It is based on the phenomenon of obstruction of light when it passes through two superposed gratings. The moiré effect can be explained by geometric optics and there is no need to invoke the wave theory of light. Moiré is the French name of textile with wavy (watered) appearance produced mainly from silk, but also wool, cotton, and rayon.
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Further Readings
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Gdoutos, E.E. (2022). Geometric Moiré. In: Experimental Mechanics. Solid Mechanics and Its Applications, vol 269. Springer, Cham. https://doi.org/10.1007/978-3-030-89466-5_3
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DOI: https://doi.org/10.1007/978-3-030-89466-5_3
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