Prism Dispersion Calculator
Calculate light dispersion through prisms including deviation angles and spectral separation
About this calculator
The Prism Dispersion Calculator determines how light separates into different colors when passing through optical prisms. It calculates deviation angles for various wavelengths and measures spectral separation based on prism geometry and material properties. This tool is essential for physicists, optical engineers, and students studying light behavior, helping design spectroscopic instruments, analyze rainbow formation, and understand how different materials affect light dispersion in laboratory and industrial applications.
How to use
Enter the prism's apex angle, refractive index, and incident light angle into the calculator. Select the wavelength range or specific wavelengths you want to analyze. The calculator will compute the deviation angles for each wavelength and display the total spectral separation, showing how much the different colors spread apart after passing through the prism.
Frequently asked questions
What factors affect prism dispersion?
Prism material, apex angle, incident angle, and wavelength all influence dispersion. Higher refractive index materials and larger apex angles typically produce greater spectral separation.
Why do different colors bend at different angles?
Different wavelengths have slightly different refractive indices in the same material, causing blue light to bend more than red light through the prism.
What is the minimum deviation angle?
The minimum deviation occurs when light passes symmetrically through the prism, with equal angles of incidence and emergence on both faces.