Moiré pattern
![A moire pattern, formed by two sets of parallel lines, one set inclined at an angle of 5° to the otherThe fine lines that make up the sky in this image create moire patterns when shown at some resolutions for the same reason that photographs of televisions exhibit moiré patterns: The lines are not absolutely level.](/Images/godic/202501/27/Moiré_pattern.svg4318.png")
![](/Images/godic/202501/27/Divers_-_Illustrated_London_News_Feb_6_1873-24318.PNG")
![the patterns are superimposed in the mid-width of the figureMoiré obtained by the superimposition of two similar patterns rotated by an angle α](/Images/godic/202501/27/Moire_parallel.svg4319.png")
![](/Images/godic/202501/27/Moire_ecart_angulaire4319.png")
In mathematics, physics, and art, a moiré pattern (/mwɑːrˈeɪ/; French: [mwaˈʁe]) is a secondary and visually evident superimposed pattern created, for example, when two identical (usually transparent) patterns on a flat or curved surface (such as closely spaced straight lines drawn radiating from a point or taking the form of a grid) are overlaid while displaced or rotated a small amount from one another.