light and optics

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Across
  1. 2. low part of wave
  2. 4. electromagnetic radiation having a very short wavelength
  3. 5. arrangement by wavelength of different forms of electromagnetic radiation
  4. 7. device for amplifying light to produce an intense narrow beam.Light Amplification by a Stimulated Emission of Radiation is what the word stands for
  5. 8. height of crest or depth of trough,good indicator of the amount of energy transmitted by a wave
  6. 11. heat radiation,anything warmer than its surroundings emits infrared rays
  7. 13. distance from crest to crest
Down
  1. 1. blanket of ozone surrounding earth 2025 km above surface.absorbing much of UV from sun
  2. 3. wavelengths of 200nm beyond violet light in electromagnetic spectrum
  3. 6. any electromagnetic wave that is useful for carrying sounds or pictures through transmitter to a receiver
  4. 9. radio waves having short wavelength and high frequency
  5. 10. high part of wave
  6. 12. number of entire cycles completed by a vibrating object in a unit of time;usually given in cycles per second.measured in hertz or Hz