This is probably the most colorful part of the instructable. So I will be explaining my theory of how it works, and if you want, you can time travel and ask Nikola if my theory is right. So we will be using energy device # 5. Let's imagine that the sky is mainly positively charged, but has some bits of negative in it; and the ground is mainly negatively charged, but has some bits of positive in it. So the antenna collects what's in the sky, and the grounding connection collects what's in the ground. So as shown in the second picture, The collected charges are separated by the diodes and put into the capacitor to store. If you have both antenna and ground, it charges faster than if you only use one. So where do the charges come from you might ask. The charges come from the sun. As shown in the third picture, the sun has a corona which is a white, electrically charged layer around the sun. So as it extends into space, it gradually thins out into a lot of streams of electrically charged particles called solar wind. Now our earth has a magnetic field which deflects almost all of the solar wind, but extremely small amounts of it pass through the magnetic shield. That makes the charges as shown in picture one. Since the sky gets charged, the ground also gets charged oppositely by laws of physics. The generators separate the charges and put them to good use by charging a capacitor.