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Vocab
| Term | Definition |
|---|---|
| Wave | an electrical impulse or radio wave transmitted or received |
| crest | The top of a wave |
| trough | A crest is the point on a wave with the maximum value or upward displacement within a cycle. |
| amplitude | The maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position |
| wavelength | A wave can be measured between any two points with the same phase, such as between crests |
| frequency | the frequency in hertz meaning the number of cycles per second. |
| absorption | the process or action by which one thing absorbs or is absorbed by another. |
| reflection | the throwing back by a body or surface of light, heat, or sound without absorbing it. |
| law of reflection | The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane. |
| diffraction | the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced. |
| interference | the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled. |