Monochromatic light consists of rays that have a single wavelength, producing a uniform colour without any variation in hue. This type of light is often used in scientific, technical, and photographic applications where precise control of colour or optical effects is required.
In photography, monochromatic light can be used for special effects, black-and-white imaging, or in combination with filters and lasers to create controlled lighting conditions. Understanding monochromatic light is important for photographers and scientists working with optics, colour theory, and experimental imaging techniques.