Across
- 2. Who invented first commercially available cell phone?
- 3. What country was the wheel invented in?
- 5. What was introduced in 1990 to the public by Sir Tim Berners-Lee
- 6. Who invented the hard drive?
- 9. What did DuPont's Stephanie Kwolek and Herbert Blades invent?
- 10. What country invented the pocket calculator?
- 11. Who invented the ball screw?
- 13. What invented Daniel Gabriel Fahrenheit in 1709?
- 15. Who invented the battery?
Down
- 1. Who invented the telephone?
- 4. What country was Skype invented in?
- 7. What invented Bartoloneo Critofori in 1709?
- 8. Who invented the first gasoline car?
- 10. Who invented the steam engine?
- 12. Who invented the first atrificial refrigeration machine
- 14. First tanks name?