Accelerated charges loose energy

In summary, the conversation discusses the concept of an electron losing energy via the emission of electromagnetic waves when it is accelerating. However, the question is raised as to why an electron moving at a constant velocity, which also produces electromagnetic waves, does not lose energy. The concept of relativity is brought up to explain that there is no absolute frame of reference for the motion of electrons.
  • #1
vidmar
11
0
I've heard it been said many a times that an electron, which is accelerating, will lose energy via the emittion of electromagnetic waves (it produces E and H around itself ...). Why doesn't an electron moving at a constant velocity (and also poroducing E and H) also lose energy on this account.
 
Physics news on Phys.org
  • #2
vidmar said:
I've heard it been said many a times that an electron, which is accelerating, will lose energy via the emittion of electromagnetic waves (it produces E and H around itself ...). Why doesn't an electron moving at a constant velocity (and also poroducing E and H) also lose energy on this account.
vidmar, what have you heard happens when the electron is slowing down again?
 
  • #3
vidmar said:
Why doesn't an electron moving at a constant velocity (and also poroducing E and H) also lose energy on this account.
According to the principle of relativity (in the restricted sense), all inertial frames are equivalent for the description of the laws of nature. How do you call one electron moving and one standing still? There is no such thing in an absolute sense. If an electron is moving relative to you, it can still be standing still relative to someone else.
 

1. How do accelerated charges loose energy?

Accelerated charges loose energy by emitting electromagnetic radiation in the form of photons. This process is known as bremsstrahlung and is a result of the acceleration of charged particles.

2. What types of particles can loose energy through acceleration?

Any charged particle, such as electrons, protons, or ions, can loose energy through acceleration. This is because they have an electric charge and therefore can emit electromagnetic radiation when accelerated.

3. Is there a limit to how much energy an accelerated charge can loose?

Yes, there is a limit to how much energy an accelerated charge can loose. This is known as the Larmor formula, which states that the power emitted by a charged particle is directly proportional to the square of its acceleration. As the acceleration increases, the energy loss also increases, but eventually reaches a maximum limit.

4. How does the rate of energy loss for accelerated charges compare to other energy loss mechanisms?

The rate of energy loss for accelerated charges is much lower compared to other energy loss mechanisms, such as collisions with other particles or interactions with electromagnetic fields. This is because the energy loss from bremsstrahlung is a result of the acceleration of charged particles, whereas other mechanisms involve direct interactions.

5. Can accelerated charges regain the energy they loose?

Yes, accelerated charges can regain the energy they loose through various processes, such as absorbing energy from external electromagnetic fields or interacting with other charged particles. However, the amount of energy regained may not be equal to the amount lost, as some of it may be dissipated in the form of heat or other forms of energy.

Similar threads

  • Special and General Relativity
Replies
16
Views
1K
  • Special and General Relativity
Replies
3
Views
774
  • Special and General Relativity
Replies
24
Views
1K
  • Special and General Relativity
Replies
3
Views
724
Replies
9
Views
1K
  • High Energy, Nuclear, Particle Physics
Replies
1
Views
522
  • Quantum Physics
Replies
4
Views
1K
  • Special and General Relativity
Replies
6
Views
902
  • Special and General Relativity
Replies
10
Views
1K
Replies
1
Views
932
Back
Top