Across
- 1. Atomic number 80
- 3. The game is on !
- 5. a coastal city in france
- 6. machine used by germans for encryption in world war
- 7. "Elementary my dear ......"
Down
- 2. laws of physics are the same for all non-accelerating observers
- 4. E= mc^2
- 8. Light takes 8 min to reach from there