Do moving electrons emit light?

[jd12345]

electron motion = light??

When an electron moves( or any charge particle moves) it creates a magnetic field around it according to biot-savarts law and ofcourse it creates an electric field around it.

So a moving electron creates light as both electric and magnetic field are present? Am i right? please correct me if I am not

Im very confused about light. It contains both electric and magnetic fields then it should contain a charged particle otherwise how these fields will be created

 

[Matterwave]

Not quite. An electron has to accelerate to create EM waves (light). An electron which moves uniformly only has static E and B fields.

 

[jd12345]

So for light we need changing E and B fields?

And please answer my second question : IF light contains both electric and magnetic fields then it should contain a charged particle otherwise how these fields will be created ?

 

[Pengwuino]

So for light we need changing E and B fields?

And please answer my second question : IF light contains both electric and magnetic fields then it should contain a charged particle otherwise how these fields will be created ?

Electromagnetic waves are self-sustaining. Changing electric fields will generate magnetic fields and visa versa.

 

[ZealScience]

Not exactly, the velocity of electron must change, in order to do that. Otherwise shifting to another inertial reference frame, you would see stationary electrons emitting EM waves, which violates the principle of relativity

 

[jd12345]

questions keep popping in my mind. Electrons are accelerating in an atom too right? Do they emit EM waves?

 

[ZealScience]

questions keep popping in my mind. Electrons are accelerating in an atom too right? Do they emit EM waves?

That's the problem of Rutherford's model, where electrons emit EM waves and collapse to the nucleus. Therefore, quantum mechanics, which later modified the model of atoms denied that would happen under scale of electrons and nucleons.