- #1
dipole
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I have a quick question about the retarded time when dealing with moving charges.
The retarded time is:
[itex] t' = t - \frac{r}{c}[/itex]
where [itex] r [/itex] is the distance between the point of observation and the position of the charge.
My question is very simple, is [itex] r [/itex] a function of the normal time [itex] t [/itex], or the retarded time [itex] t' [/itex]?
That is, which equation is correct?
1. [itex] t' = t - \frac{r(t)}{c}[/itex]
2. [itex] t' = t - \frac{r(t')}{c}[/itex]
Thanks.
The retarded time is:
[itex] t' = t - \frac{r}{c}[/itex]
where [itex] r [/itex] is the distance between the point of observation and the position of the charge.
My question is very simple, is [itex] r [/itex] a function of the normal time [itex] t [/itex], or the retarded time [itex] t' [/itex]?
That is, which equation is correct?
1. [itex] t' = t - \frac{r(t)}{c}[/itex]
2. [itex] t' = t - \frac{r(t')}{c}[/itex]
Thanks.