Across
- 1. real life iron man (not an actor) hint:physicist
- 4. lens which is thinner at the middle and thicker at the edges
- 7. first satellite launched by india
- 8. headquarters of ISRO
- 9. mother of physics
- 11. The first animal to make an orbital spaceflight
- 13. who invented flourescent bulb
- 15. smallest particle in the universe
Down
- 2. who has an idea to conduct electricity without wire
- 3. second person to step on moon
- 5. who derived the equation E=mc^2
- 6. the rubbing of one surface or thing against another
- 10. negatively charged particles
- 12. which colour has largest wavelength
- 14. smallest planet in solar system