To fill in the table based on the provided text about Sir Isaac Newton, we need to extract key details regarding his works and contributions. Here's how the information can be structured:
| Years | Subject of Research |
|---|---|
| 1661–1665 | Discovered the work of René Descartes |
| 1668 | Built the first reflecting telescope |
| 1687 | Published "Principia Mathematica" |
| 1660s-1700s | Developed fundamentals of calculus and laws of motion |
Explanation:
1661–1665: During his time at Cambridge University, Newton discovered the works of René Descartes, which influenced his scientific pursuits.
1668: Newton built the first reflecting telescope, marking a significant advancement in the field of optics.
1687: He published "Principia Mathematica," detailing the laws of motion and universal gravitation, pivotal works in modern physics.
1660s-1700s: He independently developed the fundamentals of calculus and explored other key scientific theories. Although much of his work in calculus wasn't published initially, it was groundbreaking for the future of mathematics.