How to derive sterman-weinberg formula

cosmology · 2007-08-19T01:54:34+00:00

please show me explict calculations

Thread 'Direction of the magnetic field of an oscillating charge'

Hello everyone, I’m considering a point charge q that oscillates harmonically about the origin along the z-axis, e.g.

In a strongly simplified / quasi-instantaneous approximation I ignore retardation and take the electric field at the position

simply to be the “Coulomb field at the charge’s instantaneous position”:

with

(I’m aware this isn’t...

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Thread 'Initial conditions for orbits around a wormhole'

Hi, I had an exam and I completely messed up a problem. Especially one part which was necessary for the rest of the problem. Basically, I have a wormhole metric:

Where

with an orbit only in the equatorial plane. We also know from the question that the orbit must satisfy this relationship:

Ultimately, I was tasked to find the initial...

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Thread 'How do I solve the 3D magnetic field of a Halbach Rotor?'

Boundary conditions: The derived Dirichlet and Neumann boundary conditions In terms of the magnetic scalar potential:

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Thread 'Direction of the magnetic field of an oscillating charge'

Thread 'Initial conditions for orbits around a wormhole'

Thread 'How do I solve the 3D magnetic field of a Halbach Rotor?'

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