Recent content by MartinV05

I know that the geographic poles and the magnetic ones are not the same, but it somehow seemed possible to me that the rotation is dependent of the magnetic field (or the other way around).

Why are Earth's magnetic poles not corresponding with the rotation axis? And the spin direction is opposite of the right hand rule. Probably the actual spin and the magnetic influence have something in common, but can someone tell me what's happening in this spinning process? Thanks!

By sum up, I mean the sum of all 3 digits in each combination needs to be equal to 7.

When you have combinations where digits are 0,1,2...,m, meaning we have n=m+1 and k, is there a way to see how much of them sum up to a given number? For the sake of simplicity I have the digits 0,1,2...,7 (so n=8), and k=3. I need to find how much of these combinations WITH repetition sum up to...

Ok guys, thank you so much. I think I got it! Cheers

I've just started learning Fourier series and I'm having trouble understanding it. What do they actually do? And what does the amplitude-frequency show me? I'm asking as a rookie in signal analysis, so if you could explain it to me as simple as you can it will be of great help. Thanks!

So no matter how z changes (whether real or imaginary) the limit should be the same, because they both actually complete the other "higher" variable. I know the that approaching from 0- and 0+ should be the same with limits in real variables, but never would have thought of this in that way...

In the proof of the the Cauchy-Riemann's conditions we have and equality between differentials of the same function (f(z)) by x(real part) and by iy(imaginary part?). Why do we "say" that both differentials should be equal when it's normally possible to have different differentials according...

In the final expression a "-" appears, but I don't see how we can just make it go away (turn positive) when we are working with variables. The variable can be +-∞.

I've been solving this exercise and I came to a point when one function can get two different integrals: Am I doing something wrong? Because both functions are the same, and the integrals (indefinite) are really different. This is a huge problem, because this is almost the final step of an...

Voltage source is denoted with E, and current source with I. Maybe referring to it as voltage generator, electric generator will clear something out. However, E=U=I*R [V], I= [A]. English is not my mother tongue so it's difficult for me to find the right terms.

I guess I don't mean anything, I just don't get the "jobs" of each in a electric circuit. If the question is: "What does a current source do in a circuit, and what does a voltage source do?", would be clearer to understand?

And I guess I meant voltage source by emf :)

I meant something like this: Somewhere in the circuit a current source dictates the current, and for it to be continuous in the near branches the emf sets high/low potentials for the electrons to continue moving in the ones where the emf is set. But I don't think that it is right at all when I...

I've been going through some materials, and I was reading about electric circuits. From what I read I figured that the electric current is dictated by the current source, and it's preserved(in the respectable branches) by the emf. Is that right? Or my feeling that I'm way off is true :)