Optics

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Across
  1. 2. is a unique 3-signal combo of dots and dashes codes for each letter of the alphabet and numbers from 0-9
  2. 3. wave signals generated electronically from digital info
  3. 5. the region where light is obstructed or blocked
  4. 8. used to transmit info between cellphones or between an internet router and a computer
  5. 10. matter that allows some light to pass through
  6. 11. the science of light properties and behavior
  7. 12. wave signals that are not generated from digital information
Down
  1. 1. used to transmit info from a remote control to a TV
  2. 4. used to transmit TV and radio programs
  3. 6. matter that does not allow light to pass through
  4. 7. a wave with a specific pattern that carries info
  5. 9. matter that allows all light to pass through