- #1
sweet springs
- 1,223
- 75
Hi.
Say a positive charge is at (x,y,z)=(0,0,0) at t<0 then (1,0,0) at t>0.
Electric field at (x,y,z)=(l,0,0) is (a,0,0) at t<l/c then (b,0,0) at t>l/c thus a<b.
With time delay of l/c, what propagates from (x,y,z)=(0,0,0) to (l,0,0) ?
I do not think it is electromagnetic wave because it is not transverse but longtitudinal.
Electromagnetic wave by accerelation necessary for charge position change has nothing to do with my question, I guess.
Not charge position but charge velocity change causes similar propagation question.
Best
Say a positive charge is at (x,y,z)=(0,0,0) at t<0 then (1,0,0) at t>0.
Electric field at (x,y,z)=(l,0,0) is (a,0,0) at t<l/c then (b,0,0) at t>l/c thus a<b.
With time delay of l/c, what propagates from (x,y,z)=(0,0,0) to (l,0,0) ?
I do not think it is electromagnetic wave because it is not transverse but longtitudinal.
Electromagnetic wave by accerelation necessary for charge position change has nothing to do with my question, I guess.
Not charge position but charge velocity change causes similar propagation question.
Best