Say what? So, mechanical agitation can amplify electrical current?


There's no current flowing through the air, as many have pointed out. This is an inductively coupled circuit, but EMF flows in the steel core.

Higher dimensional space rarely means a superspace, in most physics calculations it's a subspace i.e. a compactified dimension. If we can reach into these compactified dimensions and meddle with stuff anytime we like, I don't think our universe's physical laws will be the way they are because then, our physical constants would have been very, very different to begin with.

Using higher dimensional space to do stuff is a dumb idea and besides, the maths doesn't permit it. If it has no direct contact with our physical world, it also means we can't touch it and transfer information through it.

We don't need a high frequency for a greater current, we just need a suitable frequency based on the transmission medium. Transmitting power wirelessly would require both devices to be in resonance at the same frequency, so that a resonant cavity can be set up. This resonant cavity's frequency must be optimized based on our requirements, whether we're transferring a little or a lot of electricity, and whether we're transmitting a short distance or a long distance. It's kind of like the carrier wave that's most suitable for the medium or the transmission parameters.

For instance, to transmit over long distances, we'll have to use longer wavelengths. Nikola Tesla suggested the use of the Schumann cavity for resonant-coupled wireless power transmission.

Lightning is plasma. It has a conductive medium to flow through. Yeah, that's wireless if you rigidly define "wireless" as being the absence of metallic conductors. If such were the definition, then transmission through conductive plastics would be considered "wireless" as well.

Lasers, microwaves and others can't do it as easily for a few reasons. It depends on how much energy that ambient air can absorb in those wavelengths. Microwaves can pass through air rather easily, so it won't impart much energy into ambient air. Infrared radiation can heat ambient air, but it'll take a hell lot of energy for IR to get to the breakdown point of ambient air. Lasers get scattered and attenuated somewhat by ambient air, but it still doesn't dump a lot of energy into ambient air because air don't typically absorb visible light spectra anyway.

"Dimensions" is always misunderstood. A dimension is not a parallel universe, like how the science fiction cartoon and movies always speak of it as. A dimension is simply a direction through which space and time are measured. Length, width, height, these are dimensions. We don't say that we can travel into the width dimension and see a separate existence, do we?