What tools can be used to break up white light?

Breaking of white lights means dispersion of light in which the white light or the visible light splits into 7 colors.

Many tools may be used to break up the white light but among them one of them is Prism. It can break up the white lights into 7 colors.

Keep a white paper in front of the prism and the prism in the sun due to which the sunlight coming from the sun passes through the prism and the white breaks up into 7 colors due to change in velocity of the different invisible lights inside the white or the visible light.

Other tools like plastic scale or ruler also can be used to break up the white light.

Thank you