This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
ashapemoireprgtpb. Shape Moire Figure When pr pb the magnified shapes appear normally but they move in reverse direction compared to the movement of the revealing layer Emin Gabrielyan Emin Gabrielyan Gabrielyan en Original upload log en FtCG page en ashapemoireprgtpb Date Dimensions User Comment March bytes