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Results tagged with huygens-principle
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user 45664
Also known as the **Huygens-Fresnel principle**, this is a method of analysis used in problems of wave propagation in far-field and near-field diffraction. Use the diffraction tag for general diffraction questions.
3
votes
Accepted
Huygens-principle
Every point on a spherical wave front acts as a source of a new spherical wavelet. The tangent surface to all of the wavelets becomes the new wavefront. And this process is repeated using the new wav …
- 3,116
1
vote
Accepted
Huygen's principle: how does wavelet formation work?
I find only one wavelet from each point on wavefront expanding till a
new wavefront is formed. Why is it so?
The figures showing a wavelet from each point on wavefront are taken at a single poi …
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vote
Accepted
How to determine the wavefront
For an alternate process: According to Huygens Principle the wavefront at time $t$ would be the envelope (or tangent surface) of all the Huygens wavelets originating from each point on the surface of …
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0
votes
In diffraction, what exactly is causing the obliquity factor?
The obliquity factor is not needed to eliminate the backward wave. See my
Huygens' Principle geometric derivation and elimination of the wake and backward wave
https://www.nature.com/articles/s41598- …
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0
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Why is an opaque edge or a slit necessary for diffraction?
The definition of diffraction from wiki:
Diffraction refers to various phenomena that occur when a wave
encounters an obstacle or a slit. It is defined as the bending of
waves around the corners of a …
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0
votes
What is meant by secondary wavelets?
Re. {slightly edited}
https://www.colorado.edu/physics/phys1230/phys1230_fa01/topic14.html
"Huygens’ principle (Christaan Huygens, 1629-1695, published about 1690) describes how a wavefront moves in …
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1
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Explaining light distribution trough a gap using waves and Huygens principle
If the opening is greater than one wavelength in size you will have a diffraction pattern, a beam pattern like a sin(x)/x function, and will have a main lobe and side lobes--and so will not have unifo …
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0
votes
What exactly is the physical quantity referred to as 'wave-front' in Huygens's principle?
In physics, the wavefront of a time-varying field is the set of all
points where the wave has the same phase of the sinusoid. The term is
generally meaningful only for fields that, at each point, var …
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1
vote
Huygens principle (phase velocity)
I think you can delete "at the point under examination". It is not required.
Also you could replace "phase velocity" with "propagation velocity". Then the statement would apply to most, or all, wave …
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9
votes
Why exactly does diffraction occur?
Your aperture only allows a very short segment of the incoming plane wave to pass through. As the aperture becomes smaller, the segment looks more and more like a point source. A point source emits s …
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0
votes
2
answers
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Does Huygens Principle, by itself, explain diffraction?
The Wikipedia article on Huygens–Fresnel principle says that even with the addition of Fresnel, the Huygens/Fresnel principle does not explain diffraction.
...but could not explain the deviations …
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0
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Huygens' principle: Its correct interpretation, and why there is no destructive interference...
The wave equation has two initial conditions: the initial displacement, and the initial speed of the initial displacement. If the initial speed of the initial displacement is given the appropriate val …
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2
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Accepted
Huygens' principle
"How do we know that the angle ADC is right angle here?"
Because AD is in the direction of propagation and DC is a wave front which by definition is perpendicular to the direction of propagation.
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0
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By Huygens-Fresnel principle, will a spherical impulsive wave become non-impulsive in large ...
See my paper:
https://www.researchgate.net/publication/316994209
"Making waves: the geometric derivation of Huygens' Principle for wave propagation, and the problem of the wake"
Re.
a spherical im …
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1
vote
Accepted
Huygens principle: which are the sources?
Every point on the wavefront may be considered a source of secondary
spherical wavelets which spread out in the forward direction at the
speed of light. The new wavefront is the tangential surf …
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