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Mirror image
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<p>A mirror image (in a plane mirror) is a <a href="/facts/Reflection_(physics)/BhcjDs79">reflected</a> duplication of an object that appears almost identical, but is reversed in the direction perpendicular to the mirror surface. As an <a href="/facts/Optical_phenomenon/d0nGfmhT">optical effect</a>, it results from <a href="/facts/Specular_reflection/dwVIqLVb">specular reflection</a> off from surfaces of lustrous materials, especially a <a href="/facts/Mirror/wMu4u6BB">mirror</a> or <a href="/facts/Water/0lkXnJPK">water</a>. It is also a concept in <a href="/facts/Geometry/wTQf5ffQ">geometry</a> and can be used as a <a href="/facts/Concept/VWB6yhQp">conceptualization</a> process for 3D structures. </p>