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Waves & Mirrors Trms
| Term | Definition |
|---|---|
| Waves | it transfers energy from one place to another through a medium. |
| Mechanical Wave | sound (air) wave and ocean (water) wave |
| Electromagnetic Wave | gamme (light) wave |
| Transverse Wave | wave whose direction is perpendicular to particle direction-consists of alternating crusts and troughs |
| Longitudinal (Compressional) Wave | Wave direction is parallel to particle direction- has alternating compressions and rarefactions |
| Frequency | a measurement of cycles/second |
| Period | a measurement of seconds/cycle |
| Wavelength | the distance before a wave repeats itself |
| Amplitude | the height of a crest or trough from resting position |
| Wave Speed | how fast a wave travels |
| Diffraction | the ability of waves to bend around an obstruction |
| Node | destructive interference |
| anti-node | constructive interference - trough touching trough |
| Plane Mirror | this mirror creates an image which appears on the opposite side of the mirror (virtual or real image) |
| Converging/Concave Mirror | this mirror reflects from inner surface |
| Center of Curvature | the distance from the center of the sphere to the mirror |
| Focal Point | in the middle of the center of curvature and the mirror |
| Real Image | image that appears upside down- created by converging light rays |
| Virtual Image | image that appears upright- |
| Inverted Image | reversed image |