A moire pattern is an optical effect that appears when two similar patterns are placed on top of each other, resulting in a new pattern that is typically wavy or rippled. Some synonyms for moire pattern include interference pattern, ripple pattern, or moire effect. These patterns can appear in various forms, such as in textiles, prints, or on computer screens. They can be created intentionally to add texture and visual interest to designs, or they can occur accidentally when two similar patterns align in a certain way. Regardless of their origin, moire patterns are fascinating phenomena that have been studied by scientists and designers alike.