All Questions
19
questions
0
votes
2
answers
102
views
Why In an electromagnetic wave both electric and magnetic waves are in sync and perpendeculare? if one makes the other shouldnt there be a delay? [closed]
Why are electric and magnetic waves in phase if one induces the other? Shouldn't there be a delay, similar to how potential energy converts to kinetic energy and vice versa? Additionally, why are ...
- 21
0
votes
2
answers
53
views
Are all recursive interactions between electric and magnetic fields always orthogonal to each other?
ecursively, this implies that changes in the electric field generate the magnetic field, and vice versa, akin to the plane wave solution resulting from specific boundary conditions intentionally ...
- 21
0
votes
0
answers
23
views
Direction of magnetic field, current carrying conductor and its motion
In Fleming's left hand rule, we can see that if current is in direction of middle finger and magnetic field in the direction of fore finger, the thrust must act on the direction of the thumb. These ...
0
votes
2
answers
110
views
Couldn't understand the reasoning on the propagation of the electromagnetic wave in the vacuum?
Since the solution of the wave function in vaccum gives two progressive plane waves $f(x-ct)+g(x+ct)$ depending on $x$ the direction of propagation, in the other side we have the $\operatorname{div}(...
- 15
-1
votes
1
answer
115
views
How to proove that the electromagnetic wave is transverse? [closed]
From the solution of wave equation we got E = f(z+ct)+g(z-ct). How IS the function f or g are transverse?
- 15
0
votes
3
answers
138
views
Is the concept of magnetic field $B$ strictly necessary in order to learn electromagnetism?
I am new to electromagnetism, and have a question regarding the possibility to leave out the $B$ component entirely for picturing electromagnetism, as follows please.
The local relationship between ...
user315366
1
vote
1
answer
80
views
Does the fact a charge experiences a perpendicular force when moving perpendicular to a magnetic field have anything to do with EM waves?
Does the fact a charge accelerates perpendicular to a uniform magnetic field when moving perpendicular to it have anything to do with the form of an EM wave?
I thought this might link because the ...
- 799
1
vote
0
answers
33
views
Transmission coefficient in microwave cavities
I have a trouble finding the transmission coefficient S in the given case below.
I am an undergraduate student and this is an exercise handed to me by my supervisor, which I haven't yet to get around ...
2
votes
2
answers
107
views
Propagation of electromagnetic waves
When EM waves propagate, they produce oscillating electric and magnetic fields. How did we know this? Is there any experimenting concluding this or it this just a theory?
- 67
0
votes
1
answer
385
views
In which direction(s) do the electric and magnetic field lines of electromagnetic waves point?
Most diagrams of EM waves show arrows pointing away from (perpendicular to) the axial line of propagation, but I am not sure if this just shows the amplitude of the B and E fields or their lines of ...
- 4,509
1
vote
1
answer
240
views
Direction of $B$-field from right hand rule for electromagnetic wave
During a lecture, my lecturer writes that:
For polarisation along $x$ then $\vec E =E_0 e^{i\left(kz-\omega t\right)}\hat i$
For polarisation along $y$ then $\vec E =E_0 e^{i\left(kz-\omega t\right)}\...
- 156
1
vote
1
answer
76
views
Do these two electromagnetic waves interfere constructively or destructively?
let's consider two electromagnetic waves with same frequency that meet at the same point P in the figure.
where:
$\vec{S_1}$ and $\vec{S_2}$ are the Poynting vectors of the two waves
the ring ...
- 1,319
4
votes
5
answers
3k
views
Is the electromagnetic field a real physical entity?
Up till now, I always thought that electric and magnetic fields are mathematical constructs which aid our understanding. What was a one-step process of particle $A$ exerting force on a particle $B$ is ...
- 213
0
votes
1
answer
826
views
Helmholtz equation and sources
it is known that starting from the Maxwell equations it is possible to get the following Helmholtz equations:
In time domain it corresponds to a sinusoidal EM field, according to the wave equation:
...
- 1,319
4
votes
2
answers
2k
views
Complex vectors: Electric and Magnetic Fields
I have a doubt about the physical meaning of the complex representation of electric and magnetic fields.
Let's consider an electromagnetic wave, in which both electric and magnetic fields propagate ...
- 1,319