Moiré fringes are interference fringes produced by overlaying similar but slightly offset patternspic.twitter.com/jvS5uO2z4m
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or when you try and take a photo of a computer screen! The grid of pixels on the screen and the grid of light sensors in a digital camera's CCD interact to produce Moiré patterns all over the image

Thanks. Twitter will use this to make your timeline better. UndoUndo
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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I think I see a thumbprint
Thanks. Twitter will use this to make your timeline better. UndoUndo
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