# Waves 2

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• Created on: 04-04-17 12:49
Principle of superposition of waves
When 2 waves meet at a point the resultant displacement at that point is equal to the sum of the displacements of teh individual waves.
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Superposition
Overlap of 2 waves at a point in space.
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Interference
Superposition of 2 progressive waves from coherent sources to produce a resultant wave with a displacement equal to the sum of the individual displacements of the 2 waves.
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Constructive interference
Superposition of waves in phase so that the resultant wave has a greater amplitude than the original waves.
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Destructive interference
Superposition of 2 waves in antiphase so they cancel each other out and the resultant wave has a smaller amplitude than the original waves.
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Coherence
2 wave sources or waves that have a constant phase difference.
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Maxima
The point of greatest amplitude in an interference pattern from constructive interference.
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Minima
The point of least amplitude in an interferennce pattern from deconstructive interference.
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Monochromatic
Light of a single frequency.
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Stationary (standing) waves
A wave that remains in a constant position with no net transfer of energy and is characterised by nodes and antinodes.
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Node
A point where the amplitude is always zero.
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Antinode
The position of maximum displacement on a standing wave.
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Fundamental mode of vibration
A vibration at the fundamental frequency.
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Fundamental frequency
The lowest frequency at which an object can vibrate.
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Harmonics
A whole-number multiple of the fundamental frequency.
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## Other cards in this set

### Card 2

#### Front

Overlap of 2 waves at a point in space.

Superposition

### Card 3

#### Front

Superposition of 2 progressive waves from coherent sources to produce a resultant wave with a displacement equal to the sum of the individual displacements of the 2 waves.

### Card 4

#### Front

Superposition of waves in phase so that the resultant wave has a greater amplitude than the original waves.

### Card 5

#### Front

Superposition of 2 waves in antiphase so they cancel each other out and the resultant wave has a smaller amplitude than the original waves.