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retarded time). It's basically a reflection of the finite speed of light/electromagnetic-force. If you start a current going at time zero, it's effects won't be felt until time d/c, where d is the distance from the measurement from the source and c is the speed of light. But by this time, the current may have changed or moved, so to calculate the force at a distance d from the source, you pretend that it's actually time zero (that is the current time minus the time it would take for light to cross the distance ). The definition of retarded time is t_retareded = t - d/c, where t is the actual time. I hope that clears that up.
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Actually retard is the actual term, and is not vandalism. It's not retard in the noun/stupid sense, but retard in the verb/delayed/slowed sense. Basically, a retarded potential is one where the potential measured is the result of the postion of charges and currents at some previous time (called the
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since most of the equations are given in SI or cgs units. The LH units can be reinstated later. Currently the article now has a mixture of SI and cgs, I'll make the overall presentation more consistent later, but its not bad as is for now.
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Extra curvature term in the co-variant formulation in curved spacetime? My understanding was that this was forbidden by the Strong
Equivalence Principle.
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I'm not sure that I've seen non-homogenous wave equations, so as far as I know in-homogenous is the correct term.
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Is there a better way of describing that? Sounds like you are saying something is traveling backwards in time.
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Why are the pictures of the CFL lamp and cosmic background radiation on this page? They are not cited anywhere.
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Is NONhomogeneous the right expression? I thought it is INhomogeneous. Just a question/suggestion.
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Retarded solutions? I have a funny feeling that that was vandalism. I'm taking it out.-
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