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In physics, a moiré pattern (; French: ) is an interference pattern created, for example, when two grids are overlaid at an angle, or when they have slightly different mesh sizes.
Etymology
The term originates from moire (or moiré in its French form), a type of textile, traditionally of silk but now also of cotton or synthetic fiber, with a rippled or 'watered' appearance.
The history of the word moiré is complicated. The earliest agreed origin is the Arabic mukhayyar (مُخَيَّر in Arabic, which means chosen), a cloth made from the wool of the Angora goat, from khayyara (خيّر in Ar...