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| Term | Definition |
|---|---|
| diffraction | the change in direction of a wave when it encounters and obstacles or edge. |
| refraction | the bending of waves as they pass from one medium to another at an angle |
| standing wave | a pattern of vibration that resembles a stationary wave |
| reflection | the bouncing back of a wave when it meets a surface of boundary |
| constructive Int. | interference that increases amplitude |
| destructive Int. | interference that decease amplitude |
| principle of superposition | method of adding crest and troughs of interfering waves together to describe a new wave |
| beats | sounds produced by the inference of sound waves that are used to tune piano strings |
| interference | the combination of two or more wave that results in a single wave |
| nodes | points in a standing wave that have no vibrations due to destructive interference |