The Green Optimistic

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Before going into the details of this invention it would be worthwhile to have an idea of how any generator, even in theory, could be capable of producing a self-sustaining current. This has been clearly explained by Walter M. Elsasser in a Scientific American article (May 1958) titled “The Earth as a Dynamo.”
Elsasser models [...]

Core77.com’s “Greener Gadgets Competition” shows up a system invented by Alexander Parker, that could power your laptop, cellphone, or other device that has buttons as an input, to an extent that could replace your battery (for example, if you write a lot, you could write more).
Assume that if for each character in a text message [...]

Tesla’s design varied from that of Faraday in two major ways. First, he used a magnet that was bigger in diameter than the disk so that the magnet completely covered the disk. Second, he divided the disk into sections with spiral curves radiating out from the center to the outside edge.
In the Faraday unipolar generator [...]