Radio waves emitted by an antenna - Bremsstrahlung radiation?

In summary, Bremsstrahlung radiation and radio waves emitted by an antenna are both caused by the emission of radiation from an accelerating charge. However, the term Bremsstrahlung is often used in situations where it may not be entirely accurate. Strictly speaking, Bremsstrahlung only applies to the deceleration of a charged particle in matter, while radio waves from an antenna are emitted by an oscillating current.
  • #1
zincshow
104
0
Would radio waves emitted by an antenna be considered Bremsstrahlung radiation caused by pushing the electrons back and forth?
 
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  • #2
Yes in the sense that they both arise from the same effect, namely radiation emitted by an accelerating charge. Given by the Larmor formula for a nonrelativistic charge and the Lienard formula for a relativistic one.

However the term Bremsstrahlung is unfortunately used in situations which don't really deserve the term. Strictly speaking, Bremsstrahlung only applies to the deceleration of a charged particle entering matter, such as the slowing of an electron when it encounters an atom. The radiation emitted by particles in a particle accelerator is sometimes called Bremsstrahlung, but it ain't.
 
  • #3
'Bremsstrahlung' is also used for photons emitted during the scattering of a particle.
In my experience, Bremsstrahlung refers to radiation by a single particle, not by an oscillating current.
 

FAQ: Radio waves emitted by an antenna - Bremsstrahlung radiation?

1. What is Bremsstrahlung radiation?

Bremsstrahlung radiation is a type of electromagnetic radiation that is produced when charged particles, such as electrons, are accelerated or decelerated. It is commonly known as "braking radiation" because it is produced when charged particles are slowed down by a material, such as an antenna.

2. How are radio waves emitted by an antenna?

Radio waves are emitted by an antenna when an alternating current is applied to it. This causes the antenna to vibrate at a specific frequency, producing an electromagnetic field. This field then propagates through space as radio waves.

3. What is the relationship between Bremsstrahlung radiation and antenna design?

The design of an antenna can impact the amount of Bremsstrahlung radiation that is produced. Antennas with sharper edges and points tend to produce more Bremsstrahlung radiation, while antennas with smoother curves and surfaces produce less.

4. Are radio waves emitted by an antenna harmful?

The amount of Bremsstrahlung radiation produced by an antenna is typically very low and does not pose a health risk. However, at extremely high power levels, it is possible for the radiation to cause harm. This is why there are regulations in place to limit the power output of antennas.

5. Can Bremsstrahlung radiation interfere with other electronic devices?

Yes, Bremsstrahlung radiation can interfere with other electronic devices, especially if they are in close proximity to the antenna. This is why it is important for antennas to be properly shielded and for devices to be designed to minimize interference.

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