Recent content by hotel

Hi, I don’t know if I understand eigenfunction correctly, I hope someone can help me with it. By definition of eigenfunction as Af=Lf ; Is it correct to say that filtering (A) is equal to scaling (L) through representation of a function by eigenfunction (f) ? thanks

why the magnetic potential is a vector? And the other thing is could you (anyone) explain how the equation above is equivalent to the inverse square law? Because I cannot see the indication of 'square of the distance' in the fraction inside the integral ! for example what is the problem...

Hi I am in doubt about the lack of the squared distance r in the expression below: v(r)= constant* int_vol div M /|r_0 - r| dV M: magnetization vector r : displacement vectors Is it correct to say that magnetic potential V(r) obeys the inverse square law ? Or it is more correct to say that...

thanks for your help :smile: you are right, and I did a mistake about the wavelength. So it seems that it is impossible to find wavelength from frequency, phase and amplitude without knowing some kind of velocity ! I hope this time I am on the write track !

why frequency must be inverse function of time ? It can be inverse function of space as well I think, like f = 1/meter (number of cycles per meter)?! If stationary waves have opposite velocities then practically they should cancel each other and the resultant velocity will be zero! In...

Hi what is the relation between wavelength (L) and frequency (f) ? I know that L = c/f but if we have a stationary wave with no velocity (c), can we express wavelength with: L = 1/f ? thanks

what if the domain is closed ? how are the boundary conditions in this case ? Or the equation can only be satisfied under open domains?

so for which conditions are the Laplace equation not satisfied ? Is it only at discontinuities in some region of a function and discontinuities at the boundaries of a function ?

Hi I am not quit sure I have understand the laplace equation correctly. I hope some one can help me with it. As far as I understand if we are able to differentiate any function twice, then the function is harmonic. so we assume V(x,y) is harmonic because of the above. Does...

I 'm not sure !? but how do we get from this:

Hi I am trying to derive the relation between magnetic field strength in materials and magnetizing field from the $\mathbf B$ field. More exactly, my question is: how do we get this expression $\nabla \centerdot \mathbf H = - \nabla \centerdot \mathbf M$ \\ knowing...