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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 |