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Results tagged with electromagnetism
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user 227505
The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.
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Could a system of two parabolic mirrors form a long gaussian beam from incomming solar beams?
Do you remember the legend about Archimedes, who burned the Roman sheeps by using mirrors? It can be hardly believed, but it is not completely impossible. Let us quantify.
The diameter of the Sun tha …
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Inconsistent image charges: what happens when three conducting planes meet?
First of all, the real charge is screened by the conductive plates. Its presence affects only the top-right space, i.e. the space between the plates "e" and "d". Thus, the first simplification is to …
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1
vote
Is the field strength in a Helmholtz coil really a function of current?
The equation is rigorously valid only if the coil with its current is the only
object producing a magnetic field. If you have other origins of magnetic fields, the formula gives you the increase of $B …
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1
vote
Why is light moving transversal?
I start with a word that I see in the title: "transversal". I guess that it refers to the "transversal" polarization of the electromagnetic wave. It does not mean that there is a "transversal movement …
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1
answer
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Wheeler-Feynman electromagnetic theory and the "transactional interpretation"
In pages 660-663, the Wheeler-Feynman formulation of electromagnetism is given. …
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votes
Accepted
Different prediction about the motion of a charge as observed by two different observers?
According to relativity, "B" will observe the charge in uniform motion, not radiating. "A" will see the charge accelerating, but not radiating. Indeed, the laws are the same for "inertial" reference s …
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