State three scientific achievement of sir Isaac Newton

Sir Isaac Newton made numerous groundbreaking scientific achievements, including:

1. Formulation of the Laws of Motion and Universal Gravitation: He established the three laws of motion (inertia, F=ma, action-reaction) and the law of universal gravitation, which explained both terrestrial and celestial mechanics, unifying physics under a single framework.
2. Development of Calculus: Independently of Gottfried Leibniz, Newton developed infinitesimal calculus, a new branch of mathematics essential for understanding change, motion, and continuous functions.
3. Pioneering Work in Optics: Through experiments with prisms, he demonstrated that white light is composed of a spectrum of colors and developed a corpuscular theory of light. He also invented the reflecting telescope.