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 ...
I searched and couldn't find it on the site, so here it is (quoted to the letter): On this infinite grid of ideal one-ohm resistors, what's the equivalent resistance between the two marked nodes? ...
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 ...