Historical Figure: Sir Isaac Newton
Objective: Understand Isaac Newton as the towering genius who unified the Scientific Revolution, and a man of deep (if unusual) religious faith.
Sir Isaac Newton (1643-1727) was perhaps the most influential scientist who ever lived. Born in England the year Galileo died, he grew up a solitary, intensely curious boy. During 1665-66, when plague closed his university, the young Newton retreated to his family farm and, in an astonishing burst of genius later called his 'miracle year,' laid the foundations of calculus, optics (showing white light is made of all colors), and his theory of gravity - the famous (if probably embellished) falling apple prompting him to ask whether the same force that pulls an apple to earth holds the moon in its orbit. Decades later, in his masterwork the Principia Mathematica (1687), Newton united the heavens and the earth under three laws of motion and one law of universal gravitation - showing that the same mathematics governs a falling stone and a wheeling planet. It was the crowning achievement of the Scientific Revolution, and it convinced Europe that the universe runs on discoverable, rational laws. Newton himself saw no conflict between this and faith - quite the reverse. He was deeply (if heterodox-ly) religious, wrote more about theology and the Bible than about physics, and declared that the elegant order of the cosmos pointed to an intelligent Creator: 'This most beautiful system... could only proceed from the counsel and dominion of an intelligent and powerful Being.' For Newton, to study nature was to read the mind of God.
Resources
Discussion Questions
- 1What did Newton's law of universal gravitation unite that had seemed separate?
- 2How did Newton himself see the relationship between his science and his faith?
- 3Why was the Principia such a turning point in how Europeans saw the universe?
Write three sentences: one on a discovery from Newton's 'miracle year,' one on what the Principia unified, and one on how Newton connected the order of nature to God.
Vocabulary
- universal gravitation
- Newton's law that every mass attracts every other mass
- Principia
- Newton's 1687 masterwork stating the laws of motion and gravitation
Newton's Principia (1687) - the laws of motion and universal gravitation; 'the order of nature points to a Creator.'