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Article | REF: R1850 V2

Mechanical measurements using optical methods

Authors: Fabrice BRÉMAND, Mario COTTRON, Pascal DOUMALIN, Jean-Christophe DUPRÉ, Arnaud GERMANEAU, Valéry VALLE

Publication date: June 10, 2011

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4. Moiré

4.1 General

Consider two line arrays, alternately opaque and transparent, with neighboring pitches. When these two networks are superimposed, a third network of lines generally appears, with a larger pitch, known as the visible moiré.

Some examples of moiré phenomena are shown in figure 12 .

Examples of moiré bangs
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