All Questions
Tagged with electromagnetic-radiation waves
814
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Sound emission in a box smaller than the wavelength
Let us consider a spherical cavity of radius $R$ and a point-like source of field at its center.
In the following I will use the jargon of acoustics, but I think that one can think of the propagation ...
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Electromagnetic radiation diagram
I have read that expression of radiated electric field of oscillating charge is inversely proportional to $r$ (distance from charge).
But the most common diagram used in our books is
But why not here ...
user373016
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2
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Definition(s) of polarization of waves
Is there more than one definition to "polarization" in the context of waves?
In some cases, I've seen the term "direction of polarization", which I presume it refers to the ...
- 185
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Why are things reflective, absorbent, transparent etc? [duplicate]
What determines whether a material reflects, absorbs or transmits a certain wavelength of light? Just a layman's question.
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How do we know the wavelength and frequency of electromagnetic wave? [closed]
From my understanding, the frequency and wavelength of a mechanical wave can be observed by the motion of the particles (i.e., as the particles oscillate from their state of equilibrium, the wave ...
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1
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The connection between kink and wavelength
As we know, in EM wave, with the oscilation charge (for simplicity, charge was moving at constant speed, then accelerated and then continued moving with constant speed again), kinks are produced. The ...
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2
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How do EM waves interact with one another?
How is it possible to the interactions of EM waves with each other. E.G. how do visible waves interact with another wave frequency like X-Rays?
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0
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How can we establish the existence of electromagnetic waves on our own? [closed]
In the realm of scientific inquiry, it becomes crucial to substantiate the existence of phenomena before considering their properties and applications. In the case of electromagnetic waves, the ...
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Electric field - when the charge oscillates
If we have an electron moving up and down(oscilating), it produces EM wave.
Let's put charge at (0,0) and it starts oscillating - goes up to 0, 3 and then comes down to 0, -3 and repeating. When it ...
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How do surfaces absorb and reflect light at the atomic level, and what does that have to do with color?
This is sort of a 2 part question that I'm really struggling to figure out.
When white light (which as far as I understand, is just a composition of most electromagnetic frequencies) bounces off, say,...
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What is the physical significance of crest and trough in an electromagnetic wave?
Lets say an electron is vibrating at its mean position. From what I've gathered a crest would be its motion in one direction and a trough would be its motion in another direction. So first of all is ...
3
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Can you observe Rayleigh scattering of water waves?
I understand roughly that Rayleigh scattering occurs when white light encounters particles smaller than the wavelength of visible light, and short wavelengths are preferentially scattered.
I'm ...
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2
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Where is the Phasor Form of Maxwells Equations used?
I've studied and understand the differential and integral forms of Maxwell's equations, and understand the basic math and logic behind phasor notation for circuit analysis. Still, I'm confused as to ...
- 233
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How does Cherenkov radiation destructively interferes and leaves only a radiation over a beamed cone?
I'm trying to understand the observations in IceCube Neutrino Observatory where they observe the Cherenkov radiation emitted by a charged particle in the ice. I know that applying the Huygens ...
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0
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Are plane waves always transverse in Fourier Optics?
In Fourier optics one decomposes the field into plane waves to find the solution of the scalar Helmholz equation. The scalar means that the electric field $\vec{E}$ is aligned towards only one ...
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