A prism is a transparent object with flat, polished surfaces that refracts light, separating it into its different colors. This separation of colors is called dispersion.

Here are some other devices that might separate light into colors:

* Diffraction grating: This is a surface with a series of closely spaced lines that diffract light, causing it to spread out and separate into colors.

* Spectrometer: This is a scientific instrument that uses a prism or diffraction grating to separate light into its different wavelengths, allowing scientists to analyze the composition of light sources.

Do you have a specific device in mind? Let me know, and I can help you further!