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Opticks is a seminal work by Isaac Newton, first published in 1704. It details Newton's groundbreaking experiments and theories on light and color. Newton demonstrated that white light is not simple but a heterogeneous mixture of all colors, which can be separated by a prism. He showed that each color of light has immutable properties and refracts at a distinct angle, leading to the formation of the spectrum. This work challenged prevailing theories and laid the foundation for modern physical optics, influencing scientific investigation for centuries. Newton's experiments with prisms and his development of the reflecting telescope were key contributions detailed in Opticks.12

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