Light and Sight

123456789
Across
  1. 2. has all the color's and lives in the sky.
  2. 4. Light can go through but its not see through.
  3. 5. A band of colors
  4. 6. A illumination of colors displayed on the screen.
  5. 8. something that doesn't let light through.
  6. 9. You can see invisible messages if you shine it on the message
Down
  1. 1. The sun is a natural source of it.
  2. 2. Changing the path of light with a mirror.
  3. 3. something that is see through.
  4. 7. Humans see with it.