Across
- 3. invented the lightning-rod
- 5. famous for his law of gases
- 6. discovered gravity in 1666
- 8. counted 36 stars
- 9. the first person to correctly describe blood
Down
- 1. argued that the natures of mind and body are differnet
- 2. the scientific method or the bacon method
- 4. he wrote three laws of planetary motion
- 5. made the most precise observations
- 7. German physicist and engineer