U+03BA "κ" Greek Small Letter Kappa Unicode Character

U+03BA "κ" Greek Small Letter Kappa is the twelfth letter of the Greek alphabet, representing the voiceless velar plosive sound, similar to the English "k." In modern Greek, it is pronounced as a hard "k" sound, and in ancient Greek, it also served as the basis for the Latin letter K. Beyond its linguistic role, this character is widely used as a mathematical symbol in fields such as geometry, statistics, and physics, where it often denotes curvature, thermal conductivity, or the von Kármán constant. Its lowercase form is distinct from the Latin "k" by its curved, open shape, and it is encoded in the Unicode Standard as part of the Greek and Coptic block.