Prismigmängd

Prismigmängd, also known as prismatic dispersion, is a phenomenon in optics where light is separated into its constituent spectral colors as it passes through a prism. This occurs due to the varying refractive indices of the prism material for different wavelengths of light. When a beam of white light enters a prism, it is refracted at the first interface, causing the different colors to bend at slightly different angles. This separation is most pronounced when the angle of incidence is large, typically around 60 degrees for visible light. The result is a spectrum of colors, with red light bending the least and violet light bending the most. Prismigmängd is a fundamental principle in optics and is used in various applications, including spectroscopes and optical instruments. The phenomenon was first described by Isaac Newton in his work "Opticks," published in 1704.