Translation of "grating patterns" into Icelandic

A) A sine wave grating. (B) A square wave grating. (C) The stripes of the sine wave grating are wider than the photo-receptors (pink circles in the top panel), and the grating can be reconstructed vertically. (D) The stripes of the sine wave grating are narrower than the photoreceptors, so both black and white bars will fall inside a single receptor (top panel), result-ing in a uniform grey field (bottom panel).