This may sound dumb..
We know metals reflect microwave. One way to look at this is considering an eddy current formed inside the metal that cause the reflected EM Flux.
When glass reflects light, does something similar happen? Can we have eddy currents (or something analogous) with light since...
I have tried to write down the boundary conditions in this case and looked into them. As conditions i) and ii) were trivial, i looked into iii) and iv) for information that I could use. But all I got was that for the transmitted wave to have an angle, the reflective wave should also have an...
"of the two types of solutions which the Maxwell equations yield for the wave
equation, the retarded and advanced potentials, only the retarded field seems
to have a physical meaning,"
let's start please with basic (and detailed as possible for the knowledgable layman! p.s-which equation is...
Hi, guys, I am developing a simulation in Ansys Maxwell.
I set up my simulation in the "transient mode", and I would like to evaluate the eddy currents that arise in a metal Vessel.
The currents rise to a flat top in 20 ms and then after 20 ms in the flat top, it decreases to zero in 20 ms.
I...
I'm studying history of electromagnetism. Here is my question regarding Maxwell's classical brilliant work.
I understand these constants (for now)
And I understand this:
And I understand this:
But I need to understand how this math below gets us to the speed of light. I don't understand...
I am trying to simulate an electric motor in ansys maxwell software, but I can't define the whole loop in four quadrants for the material used in the rotor however it is essential to do this since the motor is of hysteresis type and works on the principle of working point moving all around the...
Hello,
I'm trying to simulate a 3 phase hysteresis motor with 4 poles, 36 slots, 220 input voltage peak for each phase, 50Hz, specified dimensions and 0.6 N.m output torque in maxwell transient.
The magnetic material used is LNG52 which is also known as alnico600, alnico5DG(ACA52) and alcomax...
I read maxwell says electric field polarizes the dielectrics.
Does it mean above effect used at photographic camera lens design to make that lens sometimes works like polarizer filter ?
Mustafa Umut Sarac
Istanbul
Homework Statement
Consider a toroidal electromagnet filled with a magnetic material of large permeability µ. The torus contains a small vacuum gap of length h. Over most of its length the torus has a circular cross section of radius R, but towards the gap the torus is tapered on both of its...
Hi,
I am working on Maxwell version 17. I have a simple motor to analysis 2D FEM.
However, when I analyze the model, I see this error.
"Maxwell2d solver, process solver2d error: Internal Solver Error: 'Transient solver handles only isotropic conductivity!'. (7:07:10 PM Apr 16, 2018)"
I am...
I wrote and solved this problem but am having serious doubts about the answer I obtained.
Homework Statement
Two point charges \pm q move along the z-axis with velocity \pm v. If they are at the origin when t=0, what is the electric field magnitude a distance r from the z-axis?
Homework...
Hi.
Here, somebody apparently derives Maxwell's equations using only symmetry of second derivatives and the Lorenz gauge condition. Unfortunately it's in German, but I think the basic ideas are clear from the maths only.
In this derivation, the magnetic field turns out to be divergence-free...
Maxwell stress tensor ##\bar{\bar{\mathbf{T}}}## in the static case can be used to determine the total force ##\mathbf{f}## acting on a system of charges contanined in the volume bounded by ##S##
$$ \int_{S} \bar{\bar{\mathbf{T}}} \cdot \mathbf n \,\,d S=\mathbf{f}= \frac{d}{dt} \mathbf...
My thoughts are concerning an infinite sheet carrying current in a direction. I wish to induce a unidirectional electric field outside of the sheet via induction.
My ideas were that if the current was changed linearly in a sawtooth fashion, then I would achieve the induced electric field in...
Hello everyone,
I am using Maxwell 16.2 with no chance to get an update.
I want to do a 3D design Eddy Current Simulation to find out the Joule losses of my single phase GIS design.
An important factor for the joule losses that I need to insert is the contact resistances of the several...
Can anyone please explain me some uses of maxwell's on my REAL life?
REAL life = weapons, propulsion, tech, radio frequency and microwaves,nuclear physics(maybe);
no REAL life = monopoles, origin of the universe, space bull, particle physics( muons,pions etc.);
PS. I am 14 years old so don't...
Something about the theory of quantum measurement/collapse in the case of quantum fields... Suppose I have a field, either a scalar, vector or spinor, that I want to describe as a quantum object. For simplicity let's say that it's a scalar field ##\phi (\mathbf{x})##, where the ##\mathbf{x}## is...
Sometimes as I am reading about the history of physics I run across this phrase.
Ponderomotive force. I have tried looking it up several times but can never find an answer that explains what is meant by this phrase. Can someone tell me in laymens terms what is a Ponderomotive Force? Sometimes...
According to the old thery of light the energy carried by by a wave is proportional to the amplitude of the electric field not to the frequency as planck proposed, so an eletromagnetic radiation in the gamma spectrum carry the same energy as a radio one if their amplitude is the same?
They only...
For static electric fields? does it apply also for a generic electric field? Let's say, moving charges inside a closed surface?
If there are charges accelerating in a closed surface a part of the electric field is due to the charges, and a a part is due to the fact that the charges acceleration...
The D'Alembert equation for the mechanical waves was written in 1750. It is not invariant under a Galilean transformation.
Why nobody was shocked about this at the time? Why we had to wait more than a hundred years (Maxwell's equations) to discover that Galilean transformations are wrong...
https://postimg.org/image/lg27z8ngn/
1. Homework Statement
in the first one. I need to find the electrical force
in the second one. Lorentz force which exerts the wire on the other element
third. Magnetization (M) for Nickel
quarter. Electromotive force induced on the dipstick
Translate...
Hi.
Is the Maxwell equation
$$\nabla\cdot\vec{E}=\frac{\rho}{\varepsilon_0}$$
even true in the stronger form
$$\frac{\partial E_i}{\partial x_i}=\frac{\rho}{3\cdot\varepsilon_0}\enspace ?$$
I guess not, since I haven't found a source suggesting this. But shouldn't the isotropic electric field...
The no slip condition has been described as the adhesion of a fluid to a solid surface setting the relative fluid velocity to zero - cohesion (viscous stress) between fluid elements spreads evenly the velocity gradient through the boundary to the free stream.
This also infers that the pressure...
Homework Statement
How to I explain that maxwell's equation has well defined divergence
Homework Equations
All four EM Maxwell's equation
The Attempt at a Solution
I discussed it by showing one of the property of Maxwell's equation that is the Divergence of a Gradient is always zero (With...
If I took a charged particle and accelerated it, that acceleration would have an effect on charges potentials, allowing for the radiation of electromagnetic waves. This acceleration would be local to a point in spacetime and the observed potentials would depend on the frame of reference of the...
In classical physics, when electric charges accelerate, they are expected to radiate. Electromagnetic waves, are by their nature the result of changing electric and magnetic fields. But is it possible to have acceleration of charges without having changing electric and magnetic fields?
One...
These are Maxwell´s equations in potential formulation:
∇2φ = DIV(grad(φ)) . Am I right?
∇2A = ROT(ROT(A))=ROT(B)=grad(DIV(A))-Laplace(A) . Am I right?
In coulomb gauge in every point and at any time DIV(A)=[PLAIN]https://upload.wikimedia.org/math/4/4/1/44131cc26bd9db464d0edb7459ccca84.png...