Light Work

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Across
  1. 4. materials that transmit some light and block some light
  2. 5. light produced by heating metal until it glows
  3. 6. image of distant object produced by refraction of light through air layers of different densities
  4. 7. technique that produces a 3D image without a lens
  5. 9. light reflecting back into the first of two materials
  6. 10. light produced without excessive loss of internal energy
Down
  1. 1. light with more than one wavelength
  2. 2. light of only one wavelength with crests and troughs aligned
  3. 3. material that allows no light to pass through
  4. 4. materials that transmit all light
  5. 8. light waves that vibrate in only one direction