Across
- 2. a unique 3 signal combination of dots and dashes codes for each letter of the alphabet and numbers zero to nine
- 4. waves signals that are not generated from digital info
- 5. matter that allows all light to pass through
- 9. matter that does not allow light to pass through
- 10. used to transmit info from a remote to a tv
- 11. matter that allows some light to pass through
Down
- 1. a wave with a specific pattern that carries info
- 3. wave signals generated electronically from digital info
- 6. used to transmit radio and tv programs
- 7. the science of light properties and behavior
- 8. used to transmit info between cell phones or between an interact router and a computer
- 12. the region where light is obstructed or blocked