Waves
- Created by: alexda
- Created on: 17-05-14 15:08
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- Waves
- Wavelength - The distance from one peak to the next.
- Frequency - How many complete waves there are per second. (Hz)
- Amplitude - Height of the wave.
- Transverse waves vibrate at right angles to the direction of travel of the wave.
- e.g. Light and all electromagnetic waves.
- e.g. S-waves
- Longitudinal waves vibrate along the same direction as the wave.
- e.g. Sound and ultrasound.
- e.g. P-waves
- Reflection
- When a waves hits a boundary between one medium and another some of the energy is reflected because of the change in density.
- Angle of incidence = Angle of reflection.
- Waves transfer energy and information without transferring matter.
- Refraction
- When a wave passes from one medium to another its speed changes because of the change in density.
- If it slows down the light bends towards the normal.
- The greater the difference in density = The greater the refraction
- If it speeds up it will bend away from the normal.
- If it slows down the light bends towards the normal.
- When a wave passes from one medium to another its speed changes because of the change in density.
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