Sir Isaac Newton: Identify the key device he himself invented. Full question: What did Sir Isaac Newton invent? Choose the correct option.
General Knowledge
Inventions
Difficulty: Easy
Choose an option
Answer
Correct Answer: Reflecting telescope (Newtonian telescope)
Explanation
Given data
- Topic: An invention attributable to Sir Isaac Newton.
Concept / Approach Beyond his laws of motion and gravity, Newton built the first practical reflecting telescope, now known as the Newtonian telescope, using a concave mirror to eliminate chromatic aberration common in refracting telescopes.
Option analysis Reflecting telescope: Correct. Microscope: Advanced by Hooke and Leeuwenhoek. Lightning rod: Benjamin Franklin. Internal combustion engine: 19th–20th century development, not Newton.
Final Answer Reflecting telescope (Newtonian telescope).