First regarding that's pretty hard as well as for certain that that is true, even for a trained scientist, even less us. BUT, giving lower than replacement the doubt, I would say the hold ups are this.
1) You would have to get depends upon in an agreement and pull money together which would probably be impossible, unless only contributing countries would benefit.
2) End up being much more a strutual feat than it seems. Remember, you have to run material through sub zero lands, underwater, hot areas, and who knows what other. It's not an easy moves. NOT IMPOSSIBLE, merely easy any kind of.
3) Nuclear energy is created by cutting atoms in half. That's a **** load of energy levels. And there's a never ending supply. Why go to the lengths of surrounding the earth in wire when we still have this path to take. Ultimately we will prpobably be employing an anti-matter machine that will generate extra power. Is actually not logical to wrap the world in wire with all these other options still secure.
Pulsating DC does not really make feel. What you are describing is often a rectified AC sinewave. A rectified sine-wave has a DC component, but in addition, it has an second harmonic. (and other even harmonics). It will be the energy a harmonics (mostly the secondary harmonic) wanting to learn pass via a transformer. But, the DC component will cause the transformer core to enter saturation and therefore the transformer will end up as absorbing a lot of the energy all of the harmonics.
A car's ignition coil works by storing energy inside an ignition coil's (inductor) magnetic field, that is proportional into the square within the current passing through the coil (inductor). When the circuit is broken, the inductor tries to maintain it's current, and generates actually high voltage to do this. However, because the circuit is switched on and off, it isn't true Digicam. A step in applied voltage (from switching the inductor) has AC content. This can be seen searching at the fourier transform of a pace function.