How to find which polarization ?

  • Thread starter Thread starter athithi
  • Start date Start date
  • Tags Tags
    Polarization
AI Thread Summary
To determine the polarization of electromagnetic waves emitted by a charged particle in circular motion, one must consider the observation points relative to the particle's orbit. At points far along the x-axis, the emitted waves are plane polarized, while at points along the z-axis, they are circularly polarized. The polarization type varies based on the angle of observation, with linear polarization in the plane of the orbit and circular polarization directly above it. The discussion confirms that the correct answer is "plane polarized and circularly polarized respectively." Understanding the relationship between the observation angle and the shape of the particle's orbit is crucial for solving these problems.
athithi
Messages
5
Reaction score
0
how to find which polarization ??

a classical charged particle moving with frequency 'w' in a circular orbit of radius 'a' centerd at the origin in the x-y plane, em radiation. At points (b,0,0) and (0,0,b) where b >> a the em waves are

1. circularly polarised and elliptically polarised respectively
2. circularly polarised and plane polarised respectively
3. plane polarised and circularly polarised respectively
4. plane polarised and elliptically polarised respectively

the answer is given to be "plane polarised and circularly polarised respectively" ...
Can anyone help how to solve this kind of problems?

Thanks in advance !
 
Physics news on Phys.org


The polarization (locus of the E vector) will have the same shape as the circular orbit looked at from that direction. In the plane of the orbit, the polarization is linear.
Straight up from the plane of the orbit, the polarization is circular. At angles in between, it is ellliptical, just as the circle looks.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Wave propagation - Oblique Incidence
Replies
1
Views
2K
Major and minor axes of elliptically polarized light
Replies
2
Views
2K
I Curious formula for elliptical polarisation
Replies
2
Views
1K
Doubt about the elliptic orbits of the planets
Replies
1
Views
1K
I Looking For Help Understanding Bell's Theorem, Hidden Variables & QM
2
Replies
80
Views
7K
Things to talk about in a Polarization Write-up
Replies
1
Views
2K
What Are the Key Characteristics of Inertial Waves in Uniform Rotation?
Replies
2
Views
2K
Polarization of a photon how do we know?
Replies
38
Views
4K
I Local mechanism for nonlocal anticorrelations inside spin theory
2
Replies
74
Views
4K
A Electric and magnetic field lines in a plane wave of finite extent
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top