Recent content by goodname

Thanks Doc Al

Below is the Wikipedia URL shows the shape of EM wave. http://upload.wikimedia.org/wikipedia/commons/3/35/Onde_electromagnetique.svg" Electromagnetic laws say that' "changing magnetic field produce electric field and changing electric field produce magnetic field" In the...

Sure. Happy to help!

Is there any software packages available to solve Differential equations(first order and second order)? This will be great help for me.

Of-course Magnetic fields are the result of time-changing electric fields but Electric Field could not be a separate thing from electron. It is a massless component of electron(or other charge carriers). Plane waves have magnetic field component at a point at a time because there is...

I think no one in this thread said that "beam of electrons in a CRT have No associated magnetic field". Electron beam in the CRT is deflected by magnetic coils systems. So magnetic field is definitely associated there.

definitely electromagnetic theory but once mastered then all others should come to ground.

sorry, i cannot understand..

..many good explanations...anyway it seems to be a 'heavily' abstract topic. "Fields are thing in our mind" but it exists, it does not have mass, shape, energy but influence of charged particles...

can we solve x1 and x2 using the below quations? if so how? 4(dx1/dt)+5(x1)-2(dx2/dt)=10 -2(dx1/dt)+5(x2)-4(dx2/dt)=0

I am not looking for any paradox. What I am thinking is, the statement "moving electrons produce magnetic field" is not completely true. May be "Magnetic fields are produced by electron(and proton or other particles whatever that has property of charge) one and only when they are set in...

Okay. How it could be? Both the observers cannot see the same effect? The observer in the truck should see the force due to the effect of polarization. The observer in the road should see the effect of magnetic attraction force plus the force due to the effect of polarization..Is it correct?

To Doc Al; What would happen if the magnetic compass is replaced by a iron needle. iron needle will not produce any fields whether in rest or motion. So what would it seem for the observer in truck and observer in road. Will the iron needle shows any deflection/attraction to anyone of the...

Yes, you can calculate the acceleration of the object due to magnetic force(a=f/m). The magnetic force increase as the object moves closer to the magnet which means the magnetic force is the property of space provided by the magnet and is different at different point in space and in turn the...

Newtons II law is applied in cases only if there is acceleration( there must be net force available in a direction). Newton III law is applied in cases involving forces(independent of net force).