Across
- 2. the reflection of light from a surface such that an incident ray is reflected at many angles, rather than at just one angle as in the case of specular reflection.
- 6. a wave that is not capable of transmitting its energy through a vacuum.
- 8. observed when a wave is not confined to a given space along the medium.
- 11. the spreading of waves around obstacles.
- 12. the waves where the displacement of the medium is in the same direction as the direction of the travel of the wave.
- 15. specifies the location or timing of a point within a wave cycle of a repetitive waveform.
- 17. the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
- 19. measure of the bending of a ray of light when passing from one medium into another.
- 20. a point along a standing wave where the wave has minimum amplitude.
- 24. the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.
- 25. the interference of two waves of equal frequency and opposite phase, resulting in their cancellation where the negative displacement of one always coincides with the positive displacement of the other.
- 28. the sensation of a frequency
- 29. the reinforcement or prolongation of sound by reflection from a surface or by the synchronous vibration of a neighboring object.
- 30. regular variation in magnitude or position around a central point.
- 32. a point at which the amplitude of one of the two kinds of displacement in a standing wave has maximum value.
- 33. the time for a particle on a medium to make one complete vibrational cycle.
- 35. motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance.
- 36. a short, non-periodic, wave formed by a single input of energy rather than a continuous or repeated input of energy.
- 38. a region in a longitudinal wave where the particles are closest together.
- 39. the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
- 41. the maximum value of upward displacement within a cycle.
- 42. describing the effect of two waves of the same type passing the same point at the same time.
- 43. when two waves of identical wavelength are in phase, they form a new wave with an amplitude equal to the sum of their individual amplitudes.
- 44. a region in a longitudinal wave where the particles are furthest apart.
Down
- 1. a ray of light or other form of radiant energy which is thrown back from a nonpermeable or nonabsorbing surface.
- 3. the angle of reflection of the light is equal to the angle of incidence and on the opposite side of the normal to the point of incidence.
- 4. the pulsation caused by the combination of two waves of slightly different frequencies.
- 5. combination of two waves moving in opposite directions, each having the same amplitude and frequency.
- 7. a substance or material that can carry a wave.
- 9. the point on the medium that exhibits the maximum amount of negative or downward displacement from the rest position.
- 10. a wave with a repeating continuous pattern that determines its wavelength and frequency.
- 13. the angle made by a reflected ray with a perpendicular to the reflecting surface.
- 14. the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal.
- 16. the entire distribution of electromagnetic radiation according to frequency or wavelength.
- 18. the principle that when a ray of light, radar pulse, or the like, is reflected from a smooth surface the angle of reflection is equal to the angle of incidence, and the incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane.
- 21. the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time .
- 22. the change in wave frequency during the relative motion between a wave source and its observer.
- 23. the physics of movements and generation of waves.
- 26. the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given colour and for the given pair of media.
- 27. a property applying to transverse waves that specifies the geometrical orientation of the oscillations.
- 31. a ray of light that strikes a surface.
- 34. two waves combine by adding their displacement together at every single point in space and time, to form a resultant wave of greater, lower, or the same amplitude.
- 37. light that has the same wavelength so it is one color.
- 40. the maximum extent of a vibration or oscillation, measured from the position of equilibrium.