One of the most notable figures in the history of science who believed that a prism split light because of 'corpuscles' of varied mass was Sir Isaac Newton. Newton was a renowned physicist and mathematician who made significant contributions to the field of optics. He conducted experiments with prisms and observed that white light could be split into its component colors when passed through a prism. Newton proposed the theory that light is composed of tiny particles or 'corpuscles' that have varying masses. According to his theory, these corpuscles interact with the material of the prism in such a way that they are refracted at different angles, resulting in the separation of colors. This explanation of the phenomenon of light dispersion through a prism was revolutionary at the time and laid the foundation for our modern understanding of optics. Newton's corpuscular theory of light was challenged by other scientists, most notably Christian Huygens and Thomas Young, who proposed wave theories of light. However, Newton's ideas continued to hold sway for many years and were eventually integrated into the wave-particle duality of light that we accept today. To learn more about Sir Isaac Newton and his groundbreaking work on light and optics, you can visit [this link](www.newton.ac.uk/about/isaac-newton) for further information. Newton's experiments with prisms and his corpuscular theory of light remain important milestones in the history of science and continue to influence our understanding of the nature of light. In conclusion, Sir Isaac Newton believed that a prism split light because of 'corpuscles' of varied mass. His pioneering work in optics paved the way for our modern understanding of light and laid the foundation for the development of the field of physics. Newton's corpuscular theory of light may have been challenged over the years, but his contributions to the study of optics remain invaluable.

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