Answer :
The scientist credited with establishing the foundation of modern physics, optics, and calculus is Isaac Newton. Here's why:
1. **Physics**: Newton is known for his laws of motion, which are fundamental principles in classical physics. His laws describe the relationship between an object's motion and the forces acting on it. This laid the groundwork for modern physics and is still taught and used extensively today.
2. **Optics**: Newton made significant contributions to the field of optics. He conducted experiments with light and prisms, showing that white light is made up of a spectrum of colors. He also developed the first working reflecting telescope, known as the Newtonian telescope, which revolutionized the field of optics.
3. **Calculus**: Newton, along with Gottfried Wilhelm Leibniz, is credited with the discovery and development of calculus. Calculus is a branch of mathematics that deals with rates of change and accumulation. It has wide-ranging applications in various fields, including physics, engineering, and economics.
By combining his work in physics, optics, and calculus, Isaac Newton made groundbreaking contributions to science and laid the foundation for many areas of study that are still relevant today.