Acceleration of electron and radiation

[Sagar Singh]

I want to ask one question,

in physics, we calculated acceleration of electron in a conductor, but according to classical electrodynamics, any charged particle while accelerating looses energy through EM radiations, So does these electrons also emit radiation, if not then please tell me WHY?

 

[M Quack]

They do emit radiation. However, in a real-world conductor like copper wire, there are many many scattering events that interrupt the acceleration. On a macroscopic scale radiation from acceleration and decelleration due to scattering averages out and the only think you see is the magnetic field due to the current = average velocity*number of charge carriers.

 

[Sagar Singh]

thanks

 

[HallsofIvy]

Also, electro-magnetic radiation is quantized. There will be no radiation until the moving electron has (in a very rough sense) produced enough electro-magnetic energy to "fill" one quanta.

 

[Sagar Singh]

Also, electro-magnetic radiation is quantized. There will be no radiation until the moving electron has (in a very rough sense) produced enough electro-magnetic energy to "fill" one quanta.

thanks sir