the light

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Across
  1. 2. that is beyond the purple end of the range of colours (electromagnetic spectrum
  2. 3. can be observed by shining a ray of light through a prism.
  3. 5. phenomenon happening when light waves move through a material without being absorbed.
  4. 7. spectrum
  5. 10. reflection or refraction of light or other electromagnetic radiation from an irregular surface or an erratic dispersion through a surface
  6. 11. is something that happens in a regular and repeated way; related to diffraction we can observe that the smaller the diffracting object is, the 'wider' the resulting diffraction xxx will be
  7. 12. a light ray is obstructed by any solid surface it will bounce back from the surface, as it cannot pass through it. An incident ray and a reflected ray are at identical angles but on opposite sides of the normal
  8. 13. use the greek letter lambda (λ) to designate it.
Down
  1. 1. process where a radiation deviates from a straight trajectory because of the collision with an other particle. The deviation of the wave happens randomly, thus this process is different from both reflection and refraction, in which the change of the trajectory is regular and predictable
  2. 4. separation of electromagnetic radiation into constituents of different wavelength.
  3. 5. light to pass through so that objects behind can be clearly seen.
  4. 6. Wave
  5. 8. imaginary line perpendicular to the surface reflecting the light. It divides the angle between the incident ray and the reflected ray or the refracted ray
  6. 9. point on the medium that exhibits the maximum amount of positive or upward displacement from the rest position.