Superposition Flashcards

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1
Q

Principle of Superposition

A

When two or more waves of the same kind meet at a point in space, the resultant displacement at that point is equal to the vector sum of the displacements of the individual waves at that point

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2
Q

Stationary Wave

A

It is the result of the superposition of two progressive waves of the same type, frequency, amplitude and speed, travelling along the same line but in opposite directions

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3
Q

Antinode

A

A point in the stationary wave where the amplitude of the wave is the maximum

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4
Q

Node

A

A point in the stationary wave where the amplitude of the wave is zero

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5
Q

Diffraction

A

The bending of waves after passing around an obstacle

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6
Q

Coherence

A

Waves are coherent/exhibit coherence when they have constant phase difference

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7
Q

Interference

A

The superposition of two or more waves to give a resultant wave whose resultant amplitude is given by the principle of superposition.

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8
Q

Constructive interference

A

Two coherent waves arrive at the same point with a phase difference of zero to produce a maximum

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9
Q

Destructive Interference

A

Two coherent waves arrive at the same point with a phase difference of pi to produce a minimum

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10
Q

Path Difference

A

The difference in distance that each wave travels from its source to the point where they meet

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11
Q

Rayleigh Criterion

A

Two images are just resolved by an aperture when the central maximum of the diffraction pattern of the first image falls on the first minimum of the diffraction pattern of the second image

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