Wireless power transmission: a difficult history of becoming

I like it. I didn’t know that real-life wireless power transmission technologies already existed. I thought before that it was purely fantastic.

And I liked it. It seems unrealistic that wireless power transmission already exists.
Fiction is becoming a reality. It’s even hard to imagine what awaits us next.

wow! didn't know how interesting :-)

I bought an HP Veer phone for my wife - so he has a magnetic / inductive charge, put the phone on the bandwagon - he is charging - no cords for the phone.
But of course the distance in millimeters, a meter or two would be much more convenient))

Vasily Anatolyevich, is mistaken. This method of energy transfer was implemented almost 140 years ago by the Italian physicist Carlo Matteuchi and it was with the help of plane-spiral coils. The source of energy was first the discharge of a Leyden can, and then the Rumkorf coil.

What is described in the Russian edition of the Full course of physics edited by prof. Gano. I can provide both the original and the page scan.

Today, the idea is realized through the transfer of energy due to the physical phenomena of electromagnetism that are derivatives or related. The transfer of energy by high-frequency currents, through magnetism, is deadly to humans and will in every way be hidden in the advancement of new technologies. Any waves that carry a fraction of energy are a material object, and you can just as well shoot a pistol, converting the kinetic energy of a bullet into what you need. Leveling the detrimental effects of "transmission paths" is the main task of wireless energy, and the transmission itself is secondary ...

I agree with Sery, there are enough microwaves that sound full although we don’t feel it, power lines are also very harmful. Living next to them in the vicinity of 50 meters, you can easily bald. Everything radiates. Well, induction hobs are certainly less harmful, since they affect metal. I don’t see anything good in the technology of mobile phone charges. It is much more convenient to have charging with a shared battery. This and the outlet is not needed. As for cities, it seems to me that the best solution is used in Germany ... There, everyone installs a small power station, windmills or solar panels in their area. All this is reserved by batteries in the basement for example. And if you are not at home or you do not use a lot of electricity, then the excess charges the reserves, and the excess goes into the general network. People also pay extra for this. As a result, we get many advantages, it is a balanced power supply network in which there are no large overloads, transmission losses of electronic are reduced. The owner pays less and consumes less. And this is in contrast to nuclear power plants when a huge amount of energy is generated at one point that needs to be distributed evenly and lose a lot. And the waste is minimal.

Electromagnetic smog is dangerous for bees, birds, animals, plants, humans - this radiation causes mutations, portable fuel-free generators are the future.

Everything that is described in the article, and in the comments, is familiar to me. I carefully follow the development of technology, and try not to miss a single novelty. There are own ideas, it’s just a pity that I’m deprived of the opportunity to test them in practice. For example, such an idea. All of us have watched lightning more than once, and we know that huge currents of hundreds of thousands, or even millions of amperes, flow in the air in the channel of a spark discharge. This means that air under special conditions is able to pass through it a huge power of electricity. To do this, you just need to create an ionized channel in the air. And to create it, with today's development of technology, is not as hard as it seems. To do this, use a laser beam operating in the ultraviolet or even in the x-ray range of radiation, i.e. a laser beam passing through air should create an ionized channel. Of course, transferring energy from outer space to Earth in this way will not work, but replacing wired power lines - why not?

Yes, here's another thing I want to add. As for electromagnetic smog, a person seems to be able to adapt to anything.We are not cockroaches, we live in the midst of radiation, and we wanted to chew on everything. Personally, I am, in this respect, a living example. Now I am 67 years old, and almost all my working experience in the USSR I dealt with microwave equipment, and the power, at times, was very significant (up to 40 kW per pulse). He worked in a screen-camera (not at all to protect someone from radiation, but to prevent the enemies from knowing what frequencies we are working on). By the way, in the screen camera we received much more radiation than if we were working in open space. And despite all this, I didn’t even bald.

It is possible to transmit energy without wires by any wave capable of propagating in space - sound, light, magnetic, with subsequent inverse transformation into electric current.

By itself, the electromagnetic field is not very suitable for transferring large charges over long distances without the corresponding "conductor" (cable, laser beam, etc.). Collecting the energy of the sun and converting it into electricity is also not easy. Efficiency in all known cases is not very high, which means that the consumer will pay both for the electric energy itself and for its loss, which makes up a significant part. It is most efficient to convert the energy of a non-electromagnetic field (a field with a higher degree of ordering) into electromagnetic. In this case, the transmission costs will decrease by an order of magnitude and, accordingly, the cost of kW will fall.