# Physics - Waves, Particles and Quantum Phenomena

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what is a progressive wave?
a moving wave which carries energy from one place to another without transferring any material
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Define the displacement of a wave
how far a point on the wave has moved from its undisturbed position
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define the amplitude of a wave
maximum magnitude of displacement
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define the phase of a wave
a measurement of the position of a certain point along the wave cycle
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What is the difference between Longitudinal and Transverse waves?
Transverse wave vibrate perpendicular (at right angles) to the direction of energy transfer, whereas Longitudinal waves vibrate along the energy transfer.
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What type of waves can be polarised?
Transverse waves
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What is superposition?
When two or more waves cross, the resultant displacement equals the vector sum of the individual displacements.
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Describe the two different types of interference.
Constructive interference; when the superposition of the two waves is greater than the original. Destructive interference; when the superposition of the two waves produce a resultant amplitude of 0
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What does it mean when two sources of light are coherent?
two sources are coherent if the have the same wavelength, frequency and a fixed phase difference
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## Other cards in this set

### Card 2

#### Front

Define the displacement of a wave

#### Back

how far a point on the wave has moved from its undisturbed position

### Card 3

#### Front

define the amplitude of a wave

### Card 4

#### Front

define the phase of a wave

### Card 5

#### Front

What is the difference between Longitudinal and Transverse waves?

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