Metallic luster refers to the shiny, reflective surface characteristic of many metals. This quality is what makes metals like gold, silver, and aluminum look bright and polished. When light hits a metallic surface, it reflects in a way that creates a shiny appearance, which is often described as a ‘glow’ or ‘sheen’.
The reason for this luster lies in the electronic structure of metals. Metals have free electrons that can move easily; when light strikes a metal surface, these electrons oscillate and reflect light effectively, resulting in the metallic sheen. This phenomenon is not only visually appealing but also plays a significant role in various applications, from jewelry to industrial materials.