Across
- 3. Developed the first successful polio vaccine
- 6. Discovered X-rays
- 9. Developed the theory of relativity
- 10. Discovered radioactivity
Down
- 1. Developed the laws of electromagnetism
- 2. Discovered the principle of conservation of energy
- 4. Developed the theory of natural selection
- 5. Discovered the laws of planetary motion
- 7. Developed the laws of motion and gravity
- 8. Developed the first vaccine for smallpox