The visible spectrum is the specific range of electromagnetic radiation that can be detected by the human eye. Spanning wavelengths approximately from 400 to 700 nanometers, this band of light encompasses multiple distinct colors—including violet, blue, green, yellow, orange, and red—which correspond to different energy levels and frequencies. The physical behavior of light within this spectrum is governed by wave mechanics, and its interaction with matter, such as through reflection or refraction, forms the basis of optics. Understanding this spectrum is crucial for fields ranging from atmospheric science to materials technology, as the energy transferred by visible light drives many biological processes and industrial applications.