probably not. Even within touching distance, electricity in the open air is quite safe. Nothing will happen if electricity flows to a light bulb or charges an electronic device without wires
probably not. Even within touching distance, electricity in the open air is quite safe. In 1899, the Serbian engineer Nikola Tesla in Colorado Springs built a 43 m high electric coil with a power of 12 million volts, and transmitted electricity through the air for a distance of 40 km, while lighting 200 bulbs with the electric charge. After he pressed the power switch, flashes of lightning shot from the coil, but no one was hurt.
Tesla's experiment proved that the earth itself could be used to conduct electricity, without the need for electrical wires. He also performed experiments on electromagnetic induction, a phenomenon discovered by the English scientist Michael Faraday 70 years before Tesla's experiments. In electromagnetic induction, a magnetic field vibrating around the electromagnet creates a current in a nearby generator - in effect, the current skips the gap. As it skips through the air, electrical energy exists as a magnetic field. Today, magnetic induction is used in the contact plates of electric toothbrushes, which transmit an electrical charge from the plastic-wrapped charging station to the battery inside the brush.
In 2006, Marin Sulejczyk, a professor of physics at the Massachusetts Institute of Technology, sent wireless electricity across a room to light a 60-watt light bulb. Suleitchik used electromagnetic induction, but with a twist. By tuning the transmitting and receiving coils in its electromagnetic field so that they resonate at the same frequency and operate at that frequency only (in the same way glass shatters when struck by sound waves of a certain frequency), the current becomes focused and bypasses everything else, including humans. Resonant coupling, as Sulichick's process is called, is much more efficient than Tesla's attempts, and also safer.
Sulicic has a company called WiTricity, and he can currently send 3,000 watts across a room—or a garage, since 3,000 watts can charge an electric car. – Lizzie Shipman
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Joseph,
Instead of sending indirect messages through comments (the intention is good, but it does you and others an injustice) to an article that may be cataloged under some one word that suits your target audience in various searches so that they enter your website, then for the culture of the discussion, of course, I will refer you and the readers to terms like MEMS or piezoelectric effect or Thermoelectric effect. It is possible to build today and produce systems that are much more efficient than solar collectors, it is true, but still very expensive in relation to the amount of energy it produces:
http://en.wikipedia.org/wiki/Thermoelectric_materials
It is definitely enough to power small and portable devices in the near future but not a household.
Mickey,
That's better, just for the culture of discussion, I read what you wrote and saw the TED video you referred to.
Indeed interesting but still in need of proof:
1) How it affects existing and future electrical and electronic systems.
2) How does it affect people in general and pacemakers in particular, animals and plants.
3) What effect does the resonance frequency he will choose have on building objects, etc.
4) Isn't it especially better for small distances and usually with small powers to incorporate solar panel devices that will charge from the light that we light in the room (there are already solutions of this type).
5) What happens when the electromagnetic field created has more than one consumer and how do you direct the consumption only to the desired consumers and not to the consumers of the neighbor across the wall?
I wouldn't rush to use it before all the issues are scientifically tested and over a long period of time so that we don't regret it in the future.
For general education magnetic fields have an effect on the human body sometimes positive and sometimes negative, magnets are used for medicine in medical theories that came from the East, and the earth's magnetic field also has an effect on man.
The article itself was written or translated in a confused and confusing way so that it was possible to understand different things from it.
Thanks
Yossi Inhorn
Electrical engineer
http://greenenergy.webix.me/index.asp
http://greenenergy.webix.me/index.as
greenenergy.yossein@gmail.com
Well, it's not exactly related, but it's about alternative energy:
Has anyone heard of the E-CAT invented by an Italian engineer named ANDREA ROSSI?
Yes, I know the topic is "controversial" because it deals with cold fusion, but its already invented
It has passed the demonstration stage, and is already in the stage of industrial production, and accepting orders.
Those who are interested can see for themselves on his website: http://ecat.com/
I would be happy if someone who understands the subject can take a look and express an opinion...
By the way, the picture is not at all related to the article just as the article is not related to its name - it actually demonstrates the Faraday cage when static electricity is produced by a device called Van de Graaff.
This article mixes concepts that are not related to each other at all. When there is a dielectric breakdown in the air between two voltage sources, there is a charge transfer (physically) from one voltage to another voltage - this is perhaps the phenomenon of "electricity in the air". This article in general deals with another phenomenon called electromagnetic induction and it occurs between two coils. This is a very useful phenomenon today in generating electricity, running motors (Brushless) and even "wireless electricity" where you also need to match the resonances of two coil systems - which I think is what the article meant and there is no danger in this, but it is a very ineffective method for long distances because the efficiency is low Very much, although today there are methods to focus the transmission, but this subject is still under research and the parts are very expensive to manufacture.
In any case, the transfer of energy from one place to another is through electromagnetic radiation (interference).
I recommend that those interested in the subject see the following section:
http://www.ted.com/talks/eric_giler_demos_wireless_electricity.html
In Tesla's experiment it is mentioned that as soon as he activated the system, flashes of lightning were created, this is another phenomenon that is not at all related to this topic and it is difficult to explain in a few words, but the result is a very strong electromagnetic disturbance. Almost every circuit breaker has a coil and you can "hear" the disturbance that is created as soon as you play with the switch - for example, try attaching a speaker that works next to the switch when you turn the lamp off and on.
The Americans conducted an experiment in which they kept a group of chimpanzees for 20 years under a high-voltage electric pole and they did not get cancer. There is currently no unequivocal research in the world that says that because you lived close to a high voltage line, you will get cancer.
It could be that even though our logic says that we should apparently be harmed by the electromagnetic induction, in practice, for some reason, it does not harm us.
Unfortunately I do not remember where to find the source of the article I read at the time on this subject.
The computer's hard disk can crash
It has a neodymium magnet, which vibrates in the presence of electromagnetic radiation
And those who have a pacemaker can say hello.
Mickey
Except that you say that I don't understand anything about it, so maybe you can elaborate and we can all understand?!
Inhorn Yossi, you don't understand anything in the field and you write nonsense.
I would like to see the original article in English, there may be a problem with the translation.
Of all places, both electrical energy that is transmitted through the air and electromagnetic energy that causes magnetic induction have an effect on the human body, especially at high powers and frequencies.
Yossi Inhorn
Electrical engineer
http://greenenergy.webix.me/index.asp
http://greenenergy.webix.me/index.as
greenenergy.yossein@gmail.com
I remember very well a number of articles (already old) that discuss the effect of electric fields on cells (human and cell line in general). It turns out - and I'm certainly not repeating anything to anyone, that there is a multiple effect on the cells, and in addition also on their increase in the creation of lethal mutants. So even residences close to a high voltage line may be associated with cell damage. The effect of a magnetic field, and "electricity through the air" until they are tested (actually quite easily) on biological systems, there is a great risk in them, and not necessarily of immediate electrocution.
A bit of order.
A. Tesla's experiments and the reports about them are rather vague.
B. There is a mix-up here between a high-voltage burst in the form of lightning in the air that has no applications other than the mere demonstration and a "transmission" of electricity in the air that actually works like a transformer - only that the two primary and secondary coils are distant from each other. This is done in a more efficient way when the alternating frequency is high (much higher than the frequency accepted in electrical networks - 50 or 60 Hz) and the efficiency is increased when both the transmitter circuit (the primary coil) and the receiver circuit (the secondary coil) which supplies the electricity to the consumer - are in resonance with the transmitted alternating frequency - as described in the article.
third. The sentence "the earth itself can be used to conduct electricity" in the article is clearly not true.
d. In any case, it is a short-range transmission of electricity - if it is a few centimeters - something that saves the need for a physical connection for the electricity supply, and if it is a few meters as described in the article - an application of charging an electric vehicle in a garage or parking lot. This process involves significant energy loss - not all of the transmitted energy reaches the receiver coil.
d. Besides the applications described in the article, there is an Israeli company that has developed a wireless charger for cell phones, laptops and all kinds of such gadgets. Basically, the power transmitter is in a location like under the table and it is enough that the power consuming device is placed on the table and it receives power and is charged. In any case, including in the applications in the article, the device that consumes the electricity should include within it the coil (or more precisely the resonant circuit) that receives the changing field and turns it into an electric current.
What is this writing?
What is "send electricity in the air"?
Weird jargon.
Meanwhile, even static electricity causes chills in many humans…
Electricity in the air can be a danger to a person as well as to the equipment we operate.
The simplest example is lightning whose impact is devastating.
The flow of electricity in any conductor as well as in the air can cause electromagnetic radiation, which some claim is harmful to humans, but it is certain that it will disrupt many contemporary electronic systems.
The passage of a very small electrical current through the heart muscle is enough to cause death.
I'm not sure that the high cost of sending electricity through the air is economic, and the Telsa experiment is no proof other than the possibility of transmitting electricity through the air under certain conditions.
An electric arc that breaks between two points (result of electricity flow in the air) can also cause vision problems by damaging the eye and seeing electric welding or long observation of different types of discharge bulbs.
Yossi Inhorn
Electrical engineer
http://greenenergy.webix.me/index.asp
http://greenenergy.webix.me/index.as
greenenergy.yossein@gmail.com