Who discovered by his experiments with glass prisms that white light consists of seven colours?

Name: Who discovered by his experiments with glass prisms that white light consists of seven colours?
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Isaac Newton discovered that white light is composed of seven colors by experimenting with glass prisms. He demonstrated that when white light passes through a prism, it separates into a spectrum of colors, and when these colors are combined again, they form white light.

Who Discovered by His Experiments with Glass Prisms That White