Across
- 2. The region where light is blocked or obstructed
- 7. Matter that allows some light to pass through
- 8. Wave signals that are not generated from digital information
- 9. Matter that allows no light to pass through
- 10. Wave signals generated electronically from digital information
- 12. Used to transmit information from remote control to a television
Down
- 1. Used to transmit television and radio programs
- 3. The science of light properties and behaviors
- 4. A unique 3-signal combination of dots and dashes codes for each letter of the alphabet and numbers 0 through 9
- 5. Used to transmit information between cellphones or between an internet router and a computer
- 6. A wave with a specific pattern that carries information
- 11. Matter that allows light to pass through