Across
- 1. an object which some people can't see without
- 3. this inventor created an object that can be used for both saving and amusement
- 5. almost everyone us this to get around
- 7. people who have to undergo surgery are injected with it.
Down
- 2. he invented things that are still used today, such as the law of hydrostatics
- 4. a device which people use to communicate
- 6. his wish whose the end of the war