renormalize said:
"Static" means something is independent of time. That something can still depend on position in space, like the ##1/r^{2}## dependence of a charge's E-field.
Of course a charge in uniform motion carries energy that moves forward with it: it's called kinetic energy! For uniform motion, KE is conserved, so none of it is converted to radiated energy that moves away from the charge.
1. And what's that something that's independent of time ? if charge moves with constant speed, E will change at observable point for sure, but why not dependent on time ? at `t=2`, E can be 10 and at `t=3`, E can be 12. So as time passes, charge moves more which changes E at each point. I might be asking the obvious, but with this logic, it's unclear.
2. ah, true. In that case, charge doesn't even emit energy in its own direction, it's just a carrier of energy. Seems like Newton's first law holds very true here. Correct ?
3. If 2 charges kind of collide, there'll always be at least 2 EM waves produced(one from each charge, since they both experienced acceleration). There could be more waves depending on whether the charges stay accelerated or deaccelerated. right ?
4. If charge was moving constant speed and then acceleration became 2m/s, but stayed 2, then this will continue producing EM waves as long as acceleration is non zero. right ? it's just won't be sinusoidal form, meaning E and B will only go in one direction(either increasing or decreasing) at each point. Correct ?
5. If electron had KE as `E1`. Then it got accelerated, and energy quickly became `E2` (E2>E1). As far as I understand some portion from E2 will be radiated in a way that => E2 - radiated energy > E1. Is this correct ?
6. What actually defines how much energy charge radiates ? I know you will say the more acceleration it got, the more energy it will radiate. True, but if you focus on a different view such as If charge got accelerated to E2, and we know by the formula, that it radiated the energy = `X`. Why `X` and not `X-2`. Whats the logical explanation that it radiated this very specific energy ?