prízma
Prízma is a term primarily used in optics to describe a transparent optical element with flat, polished surfaces that refract light. A common form is a triangular prism, which is often used to disperse light into its constituent spectrum. When white light enters a prism, it is bent, and because different colors of light have slightly different wavelengths, they are refracted at slightly different angles. This separation of white light into a spectrum of colors, such as the rainbow seen after rain, is a fundamental optical phenomenon demonstrated by prisms.
Prisms can also be used for other optical purposes. Right-angled prisms, for instance, are often employed as