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Waves
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Waves
Waves are disturbances that travel through a medium, carrying energy, sometimes information, but not matter
Frequency = f = Hz = the number of vibrations per second of the medium or of the source of the wave.
- Wavelength = λ = m or other convenient unit = the distance between two successive crests on a transverse wave, or between two successive compressions on a longitudinal wave.
- Wavespeed = v = m/s = the speed at which an individual crest or trough moves through a medium.
- eg. sound travels quicker in liquids than gases because the molecules in a liquid are closer together and have stronger forces of attraction between them.
- Amplitude = a = m or other convenient unit = the height of a wave, measured from the undisturbed (midpoint) position.
- Time period = T = secs = this is the time taken to produce each complete wave.
- eg. this is how you would use the equation T = 1÷f
- Time period = T = secs = this is the time taken to produce each complete wave.
- Wavespeed = v = m/s = the speed at which an individual crest or trough moves through a medium.
- eg. 1Hz = I vibration per second etc..
- Wavelength = λ = m or other convenient unit = the distance between two successive crests on a transverse wave, or between two successive compressions on a longitudinal wave.
Transverse waves = the medium vibrates at right angles to the direction of the energy transfer
- eg. water ripples
- Longitudinal waves = the medium vibrates along the same direction as the energy transfer
- eg. sound waves
Wave equation = v = f x λ
- wave speed = frequency x wavelength
ALL waves can refract, reflect and diffract
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- Mind Map on Waves, created by stewartlj on 11/11/2015.
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- stewartlj
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