Across
- 4. energy carried over wires
- 5. the spectrum that causes sunburn
- 6. not clear,blocking light so none get through
- 9. a way of communicating with dots and dashes
- 11. to take or soak in
- 12. the telegraph
Down
- 1. an early machine for showing movies
- 2. protection from danger
- 3. clear,see through so light gets through
- 7. short invisible light waves beyond violet
- 8. for rainbow
- 10. hurt/harm