1681476
Wave
- Types of waves
- Longitudinal
- Vibration is
parallel to the
direction of travel
- e.g sound waves
Annotations:
- - Required medium as it cannot travel through a vacuum
- e.g sound waves
- Vibration is
parallel to the
direction of travel
- Transverse
- vibration is
perpendicular to
direction of travel
- e.g electromagnetic waves
Annotations:
- -no medium required - travel at a speed of light (3x10^8 m/s)
- e.g electromagnetic waves
- vibration is
perpendicular to
direction of travel
- Longitudinal
- Diffraction and Interference
- bending of waves as they pass around a barrier
- when two barriers form a narrow slit, curved waves are formed
- coherent waves of same f can be generated by diffracting single wave thourgh two or more narrow slits
- When emitted from different sources, the interference pattern is formed
- constructive intf.
- -occurs along antinodal lines/
crest + crest/ trough + trough/ loud sound
- -occurs along antinodal lines/
crest + crest/ trough + trough/ loud sound
- destructive intf.
- occurs along the nodal lines/
crest + trough = cancelled out /
quiet sound
- occurs along the nodal lines/
crest + trough = cancelled out /
quiet sound
- Superposition
- constructive intf.
- When emitted from different sources, the interference pattern is formed
- coherent waves of same f can be generated by diffracting single wave thourgh two or more narrow slits
- when two barriers form a narrow slit, curved waves are formed
- bending of waves as they pass around a barrier
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