Tagged Questions

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votes
0answers
75 views

Is there an equation for the magnetic field of a conductor attached to a magnet?

Let's say I have a hollow conductive rod, 10mm diameter (O.D.), and I place a magnet of known strength 50mm up the shaft. What is the microTesla (mT) or Gauss (G) of the magnetic field (or flux ...
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1answer
115 views

Modem and cooler pad [closed]

I have a modem.Due to heating issues i fixed a double cooling fans with that.now i get a small doubt.that is "will the magnet in the fans will affect the modem in anyway?" thanks in advance.
3
votes
2answers
700 views

Does van Eck phreaking really work, or is it an urban myth?

Van Eck phreaking, the ability to reconstruct distally the text on a CRT or LCD screen using the leaking em from the target computer, was in the news about five to ten years ago. It is talked about as ...
0
votes
1answer
58 views

Impedance Measurements in AC at Various Frequency [closed]

I need to build a device to measure the impedance in AC, at various frequency (100Hz - 100KHz), with the quadrupole method. No, I have quite a good understanding of the principle behind the this kind ...