Huygen's Principle of Wave Propagation · Huygen's Principle of Wave Propagation Wavefront: the...
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Huygen's Principle of Wave Propagation Wavefront: the leading surface of a wave disturbance Huygens' Principle:
Transcript of Huygen's Principle of Wave Propagation · Huygen's Principle of Wave Propagation Wavefront: the...
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Huygen's Principle of Wave Propagation
Wavefront: the leading surface of a wave disturbance
Huygens' Principle:
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REFLECTION at a interface
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HUYGENS - FRESNEL PRINCIPLE
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Construction of wavefronts ( Isotropic materials) The figures present three cases for different the index of refraction of medium-2. The index of refraction is the same for medium-1 The incidence angle is the same in all the three cases. Notice the variation of the refracted angle.
Image
uB
A
D
C
Wavelet
Y
1
2
Wavefront
Ray
Image
u X
YB
A C
Wavelet D
1
2
Image
uX
YB
A C
Wavelet D
1
2
Wavefront
Ray
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Glass
<
>
REFRACTION OF LIGHT Case: V2 > V1
Air
Wavelet
Wavefront
Ray
Case: V2 > V1
Ray
Wavefront
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REFRACTION OF LIGHT Case: V2 < V1
Air
Glass
Wavelet
λ2
Ray
Ray
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