What was Newton's major contribution to optics?

Answer 1

Newton's major contribution to optics was his demonstration that white light is composed of a spectrum of colors, which can be separated using a prism. He conducted experiments to show that when light passes through a prism, it refracts and disperses into the visible spectrum, revealing colors from red to violet. This work laid the foundation for modern color theory and challenged the prevailing notion that light was a homogeneous entity. Additionally, Newton proposed the particle theory of light, which further advanced the understanding of optical phenomena.