"Bilge" <dubious@radioactivex.lebesque-al.net> wrote in message
news:slrnbvraov.dan.dubious@radioactivex.lebesque-al.net...
> Harry:
>
>  >>
>  >>   Newton's third law fails only when an object is moving at a velocity
>  >> which is much larger than the propagation of a signal through the
object
>  >> and large enough for the simultaneity of different points on the
object to
>  >> matter. Then, newton's third law doesn't really fail so much as it
needs
>  >> to be analyzed more carefully to account for the difference in
>  >> simultaneity.
>  >
>  >I must read the allegations again! It is not just about high velocity,
but
>  >force balance with the Lorentz force, for example when a charged object
>  >moves slowly perpendicular to a wire with a DC current. Perhaps I missed
out
>  >on a textbook that carefully analyses this simple looking case.
>
>   The motion of a charge next to a wire can be found in a fairly
> straight-forward way just by finding the B-field from the wire and
> and using the lorentz force law. (Working in the frame in which the
> field from the wire is purely magnetic).

True. So now we have: