+Electrochromism is the reversible change in a material's [Optical properties](/wiki/Optical_properties)—its color or opacity—triggered by an [Electric charge](/wiki/Electric_charge). This phenomenon allows for dynamic control over light, finding applications in smart windows, variable-tint mirrors, and low-power displays.
+## See also
+- [Smart Window](/wiki/Smart_Window)
+- [Electrochemical Cell](/wiki/Electrochemical_Cell)
+- [Redox Reaction](/wiki/Redox_Reaction)
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