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Questions tagged [method-of-images]

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Why does concave mirror simultaneously form 2 images?

So in an experiment to find focal length of a concave mirror first we had to estimate its rough focal length. I kept an object at point which was beyond the focus in front of the mirror and got its ...
26 views

Boundary conditions for an infinite line charge and grounded conducing plane

I'm not asking for a solution to the problem, I'm confused about what I should set the boundary conditions to, it's obvious that $V=0$ at $z=0$ because of the grounded $xy$ plane, but I don't know ...
20 views

Force between Point Charge and a Neutral Conducting Sphere

My question is simply an extension of this SE post; I don't understand why $q'+q''=0$ (both charges of hypothetical construct) for the sphere to be neutral. I'm trying to find a parallel between the ...
22 views

Taking into consideration the non-0 value of an equipotential in a method of images problem

If the infinite conducting plane in the diagram above is grounded, then $V=0$ on the plane and the image problem is easy to solve - just put the dotted $-q$ charge there and the $V=0$ equipotential ...
45 views

Tricky math step in Method of Images for conducting sphere

I am trying to understand this classic method of images problem. I have four textbooks open and they are all giving me the "it can easily be shown" for a critical math step in the solution. For a ...
24 views

Virtual and Real Images

I am well thorough with the concept of virtual and real images for a single lens/mirror. However I don’t understand how it exactly works for complex system of lens .eg-two or three lens with a ...
107 views

Applying method of images to magnetic dipoles

I want to apply the method of images to quasi-stationary calculate the 2D magnetic field distribution of a magnetic dipole and a half space with certain electrical properties (permeability, ...
59 views

Method of Images conundrum

My lecturer and I have found separately valid solutions to Poisson's equation in the region of interest for the following problem: Here is my interpretation of the boundary conditions: V(x,y,z \to ...
35 views

the method of images and bringing a charge to an infinite grounded plane

The classic image problem is that of a point charge $q$ held a distance $d$ above a grounded plane. The solution is this problem is to replace grounded plane by a charge $-q$ a distance $d$ below the ...
37 views

Why are we allowed to put an image charge inside the sphere?

In a problem with a sphere and a charge $q$ at a distance $l$ away from it, the solution involves putting the image charge inside the sphere at $a = \frac{R^2}{l}$. But doesn't that contradict the ...
100 views

Green's function in a region between a conductor sphere and two charged spheres inside, with point charges inside of each

Please, help me. I have to find the Green's function in the following region, but I don't have any idea how to find it: I have a conducting spherical shell of radius a; in the center there are 2 ...
My question arised while solving Classical Electrodynamics(J. D. Jackson) Pro 4.9a Find a potential at all points in space for a point charge $q$ located in a free space a distance $d$ from the ...