What did sir isaac newton demonstrated that is a property of visible light?

Sir Isaac newton demonstrated that visible light is composed of different colors by passing it through a prism. This experiment showed that white light can be separated into a spectrum of colors—red, orange, yellow, green, blue, indigo, and violet—revealing the property of dispersion. He also concluded that these colors could be recombined to form white light again, highlighting the additive nature of color. This work laid the foundation for understanding the behavior of light and color.