Across
- 3. Father of political philosophy, morality, and
- 5. Leonardo da Vinci's most famous creation
- 6. TNT
- 8. Nicolas Appert
- 9. Chinese thinker and social philosopher, The first private teacher
- 11. Alternating current
- 13. Abbas ibn Firnas
Down
- 1. logic
- 2. Alexander Parkes
- 4. Toilet,Lamination
- 7. Pinhole Camera
- 10. Paper
- 12. Moonlight Sonata