How is the Relativistic Larmor Formula Derived Using Dot Products?

AI Thread Summary
The discussion centers on finding a step-by-step derivation of the relativistic Larmor formula, specifically focusing on the integral involving dot products rather than a covariant approach. A participant shares a German lecture that contains a derivation but notes potential language barriers and uncertainty about its relevance. Another user seeks clarification on evaluating a specific integral related to the total power radiated, referencing a different source that outlines the integral process. They inquire about the relationship between the angles involved and the dot product of acceleration and unit vector. The conversation highlights the need for detailed mathematical explanations in the context of relativistic electrodynamics.
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Hi all,

Does someone know where to find the relativistic generalization of the larmor formula? I'm interested in the integral that involves a lot of dot products. So not the derivation that uses covariance to arrive at the formula.

Are there any articles or books available that work out this integral step by step?

Thank you very much.
 
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nos said:
Does someone know where to find the relativistic generalization of the larmor formula? I'm interested in the integral that involves a lot of dot products.

This (http://www.ita.uni-heidelberg.de/research/bartelmann/Lectures/elektrodynamik/edynamik.pdf ) lecture has a derivation of the relativistic Larmor formula I once comprehended - around page 159. There are two catches:

1) It's in German (but many formulae, so you might get it)
2)I don't know if it is the kind of proof you requested.

If you have problems in one or two steps, I shall help translating.
 
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Hi, thank you for replying and its what I've been looking for. Except that I know that the integrated power gives this result. I need to know how to evaluate this integral. It involves a lot of dot product because of the triple cross product.
 
It's equation 12.70 integrated over all solid angles that give the total power radiated.
 
In http://www.phys.lsu.edu/~jarrell/COURSES/ELECTRODYNAMICS/Chap14/chap14.pdf (page 14)it shows the integral and it is worked out step by step. They set the angle between velocity and unit vector =Theta, and angle between acceleration and velocity = Theta(0). Does this mean that the dot product of acceleration and unit vector= acceleration * cos(theta(0)-theta))? Sorry for not using math formulas, I am at work on my mobile and doesn't allow formulas.
 
comparing a flat solar panel of area 2π r² and a hemisphere of the same area, the hemispherical solar panel would only occupy the area π r² of while the flat panel would occupy an entire 2π r² of land. wouldn't the hemispherical version have the same area of panel exposed to the sun, occupy less land space and can therefore increase the number of panels one land can have fitted? this would increase the power output proportionally as well. when I searched it up I wasn't satisfied with...
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