PHYSICS CROSSWORD PUZZLE

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Across
  1. 3. the medical term for nearsightedness
  2. 4. the bending of light around an obstacle and subsequent spreading of light waves into the region behind the obstacle
  3. 6. It is commonly referred to as laser eye surgery, and is a type of refractive surgery for the correction of myopia, hypermetropia and astigmatism.
  4. 8. any surface that is smooth enough to produce regular reflection of light incident upon it
  5. 9. the change in the velocity of light when it passes from one medium to another of different optical density
  6. 10. reflection from smooth surfaces
  7. 12. the study of the iris of the eye
  8. 15. light that is allowed to pass through a single slit to produce coherent light
  9. 17. a device that enables us to see distant objects
  10. 18. scattering that occurs when the particles are much larger than the wavelength of light
  11. 19. the amount of light falling on a unit area of a surface
  12. 20. scattering that occurs when the scattering particles are small compared to the wavelength of light interacting with it
  13. 21. a property of waves that can oscillate with more than one orientation. May be achieved by reflection, double refraction, selective absorption and scattering
  14. 22. the turning back of light into the same medium after striking a surface
  15. 24. an _____ body does not transmit light at all
Down
  1. 1. a straight line segment with an arrow on one end indicating the direction in which light is travelling
  2. 2. the study of light and its properties
  3. 5. a measuring device that measures the wavelength of light and the diameter of stars
  4. 6. an acronym for light amplification by stimulated emission of radiation
  5. 7. the splitting of white light into its constituent colors
  6. 11. Length the distance from the optical center of the lens to the principal focus
  7. 13. an electromagnetic radiation that is visible to the human eye and is responsible for the sense of sight
  8. 14. ______ Acuity that is the clarity of vision or sharpness of vision
  9. 16. the ratio of the size of image to the size object
  10. 23. man’s answer to the eye’s inability to produce a permanent record of the image formed at the retina.