RHOMBUS:. . In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a simple (non-self-intersecting) quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length. The rhombus is often called a diamond, after the diamonds suit in playing cards which resembles the projection of an octahedral diamond, or a lozenge, though the former sometimes refers specifically to a rhombus with a 60° angle (see Polyiamond), and the latter sometimes refers specifically to a rhombus with a 45° angle. . MOIRÉ PATTERN:. . In mathematics, physics, and art, a moiré pattern (English: /mwɑːˈreɪ/; French: [mwaʁe]) or moiré fringes[1] are large-scale interference patterns that can be produced when an opaque ruled pattern with transparent gaps is overlaid on another similar pattern. For the moiré interference pattern to appear, the two patterns must not be completely identical, but rather e.g. displaced, rotated or have slightly different pitch. Moiré patterns appear in many different situations. In printing, the printed pattern of dots can interfere with the image. In television and digital photography, a pattern on an object being photographed can interfere with the shape of the light sensors to generate unwanted artifacts. They are also sometimes created deliberately – in micrometers they are used to amplify the effects of very small movements. In physics, its manifestation is the beat phenomenon that occurs in many wave interference conditions. . #rhombus #moire #moirepattern #moiré #parratoro #kineticart #opart #artecinetico #artecinético #rombo #opticalillusion #ilusionoptica #artoftheday #instaart #instaartist #picoftheday #wikipedia https://www.instagram.com/p/BxkcOzyg42-/?igshid=j07xcet4w5d5