Probably not. Even when it’s nipping at our toes, wireless electricity is pretty safe. In 1899, Serbian engineer Nikola Tesla built a 142-foot-tall, 12-million-volt electric coil in Colorado Springs and transmitted electricity wirelessly across 25 miles, illuminating 200 lamps with the charge. After he flipped the switch, flashes of lightning leaped from the coil, but no one was harmed.
Tesla’s experiment proved that the Earth itself could be used to conduct electricity, no wires necessary. He also experimented with electromagnetic induction, a phenomenon discovered 70 years before Tesla’s experiments by the English scientist Michael Faraday. In electromagnetic induction, an oscillating magnetic field around an electromagnet produces a current in a nearby conductor—in effect, the current jumps the gap. While it is airborne, electric energy exists as a magnetic field. Magnetic induction is used today in the contact plates on electric toothbrushes, transmitting a charge from the plastic-wrapped charging station to the battery inside the brush.
In 2006, Marin Soljacic, a physics professor at the Massachusetts Institute of Technology, sent wireless electricity across a room to light a 60-watt bulb. Soljacic used electromagnetic induction, but with a twist. By tuning the sending and receiving coils in his electromagnetic field to resonate at the same frequency and engage only at that frequency (the way glass will shatter when struck by sound waves of just the right pitch), the current is focused and bypasses everything else, humans included. Resonant coupling, as Soljacic’s process is known, is far more efficient than Tesla’s attempts, and safer too.
Soljacic has a company called WiTricity, and he can now send 3,000 watts across a room—or a garage, since 3,000 watts can charge an electric car.
Have a science question you've always wondered about? Send an email to fyi@popsci.com
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.


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Lightning
so pretty much: as long as your not grounded in any way.
why learn from your own mistakes, when you could learn from the mistakes of others?
itd be fun to test, put thick rubber under a metal chair and let it flow
Tesla was a far greater genius than Edison could ever have hoped to have been, but alas Tesla wanted free energy for everyone and Edison and his Corporate backing were having none of it, that's the reason we still pay for electricity even though Tesla proved it could be harnessed and distributed for free... but that wouldn't have made anybody rich...
There is immediate cooking and then there is slow roasted smoke cooking. When the RF takes a long time to damage a human,
-who decides the amount of cooking time and amount of damage to be tolerated, I do not know-
the manufacture of the RF declares innocence of causing the damage and insists everyone else to prove he cause the problem.
Tesla is the man, probably the greatest scientist that ever lived. He had a system to provide electricity to everyone for free! He basically was using the ionosphere as a rechargeable battery , then could beam wireless electricity to anywhere on earth. Problem was J.P Morgan (the actual J.P) found out that the electricity would be free when he asked the question “where do the meters go”. He scrapped the plan and withdrew funding. Renewable energy is nothing new..but the word “free” leaves a bad taste in the masters mouth.
@ender7718: Just out of curiosity, how did Tesla specifically "prove" that energy can be harnessed and distributed for "free"? A rumour is not the same as proof, and if we are to believe the conspiracy theorists, and his notes were stolen by Edisons henchmen, why are we still churning out current with generators? It would make much more sense, to secretly generate the current with Teslas technology for free, and charge for it as it were generated by ordinary powerplants...
If we skip the mystical mumbo-jumbo that surrounds Tesla, I think that his greatest contribution to electrical engineering was the harnessing of alternating current for practical applications. Period. And that is quite a feat in itself.
Tesla was not any kind of magical wizard. He was just a very, very good engineer and inventor who sadly lost some of his touch with reality later on in life.
Ok, I can see a windmill near my house. I can see solar panels near my house. But I do not invision daily lots and lots of lighting near my house and this be considered a good idea. Yes, the power maybe free, but seriously?!
So the initial experiment was done in 1899. No one was harmed. We now carry a multitude of electronic products: phones, GPS, laptops, etc. Seems to me that the 2006 experiment needs to be expanded beyond "a room" to prove safety among other variables. I'm just not buying it that current can travel 25 miles nowadays without some equivalent of an EMP blast on someone's car or electronic products in their home, since that is what this is...electromagnetic energy.
Tesla was the greatest scientific mind we have ever witnessed, more so than Einstein.
Yes Tesla invented the AC motor and we would be in the dark ages w/o him.
He also invented / discovered long range wireless transmitters, x-rays, radio astronomy, the tesla coil, microwaves, vacuum tubes, radar, hydro electric generators, invented the first remote controlled robot, the true inventor of radio. He holds over 100 patents and countless other inventions he couldn’t get patents for but the U.S government stole them when he died.
Tesla was so ahead of his time that people today still don’t understand his genius and what his contributions meant. (from a coal burning society to electrical).
He did not “lose touch” with reality. He was black listed by the powers at be because he wanted to provide the world with cheap energy. If he was so out of touch, why did the FBI raid his hotel room (were he was living) the day after his death and confiscated all of his notes and they have never been released.
The energy that tesla wanted to provide wasn’t “free” in terms of breaking the laws of thermodynamics. He wanted to harness the power of the ionosphere, by beaming electricity to and from it. Like I said he wasn’t a sheep, he didn’t listen to his boss, who happened to be one of the most powerful men in U.S.A at the time J.P Morgan, and J.P Morgan destroyed him.
FYI J.P Morgan funded a study to see how many news papers he would have to own to control public opinion in the U.S. The answer was 25. He quickly bought all 25. Today it is whittled down to 5 main media corporations. No wonder all the sheep think the same.
Bravo couldn't have said it better myself. There are many different testimonials of several of Tesla's "theoretical" free-energy devices from very prominant figures of that time. Still like Quintus said none of these are "proven". But, you have to wonder, why would the government seized all of his notes/inventions. Read over tesla's dynamic theory of gravity and you'll soon understand why. People wont be ready for what tesla found for a very long time due to the magnitude of his discoveries. The thougt of being able to manipulate the ether around us to particulate matter or even create life sure would hurt religions and big profit companies dont you think.
Regardless of the fate that Tesla eventually suffered next to Edison, the fact remains that in our society where free market dominates, return on investment and profit means more than anything.
No one then was interested in free energy just like no is now. Much like skred mentioned, this experiment must be done on a wider scale to determine the widescale effects on a modern society. That aside, private interest intersects with public interest in terms of overall economic strength. If Tesla wasn't looking to hand his work over to the U.S. Government or J.P. Morgan, it's not outlandish to believe that he would be discredited by others for the concept of free energy without any positive effect for the nations economy.
For that there are two things to consider. The first being that his idea was so far ahead of its time that it was considerably too sophisticated for actual mass production and no one would easily buy into it (much like the Wright Brothers and how the only people interested in their creation was the U.S. Army; which was more like their last choice for a client). With this, Edison's concept was easier to understand thus far more marketable.
The next being that the brilliance in Tesla's discover was so great that it would have revolutionized energy production in a way that would have leveled the playing field for nations across the entire world (more immediately the developed industrialized nations of the period). With the turning of events that would eventually lead to the first World War, the concept of free energy would not only make no contribution to economic prosperity in the U.S., but it would also be considered a national security risk. For this Tesla's efforts would have been stagnated.
Free renewable energy production in any fashion may not see the light of day until the majority of nations' actions around the world are dictated more by the prospects for national economic strength and international commerce more than the spoils of warfare (sense it's more likely that the world may never be united under one nationalistic type of rule). Until then, such ideas conceptually threaten any given developed nation's national security interest.
@DerivePi
I was just going to make that point when I saw the title of the article. "Yes! lightning!"
Ah nice points phoenix i forgot to mention earlier however that we are pretty close to a form of free energy. Scientists are firing laser beams into thunderstorms as some of you might have read on this site. They are successful in inducing a couple meter long strike multiple times. There is also a company (logic-co) that is working on using a step down tesla coil in order to jump the current of the strike and use it for electrolysis. Their success is limited atm due to funding. Perhaps with the fine tuning of these two experiments this will be a viable source of power in the near future.
Just to wrap this up, anyone who doesn't think Tesla was the greatest inventor of all time had never heard of him before this article! Plain and simple <3
He was just a humble man who invented things for the common good and didn't patent them so they could be used openly. There was never a time in his life when he wasn't poor, and this just proves how horrible society is, he should have been living like a king with as much money at his disposal as he needed for research, but alas people with good intentions are always the ones who get the short end of the stick in this day and age.
Aldrons Last Hope,
I have read all the information you stated before about Telsa and what happen to him in his life. He was a great man and his ideas were suppress too.
Plus you said, “FYI J.P Morgan funded a study to see how many news papers he would have to own to control public opinion in the U.S. The answer was 25. He quickly bought all 25. Today it is whittled down to 5 main media corporations. No wonder all the sheep think the same. ".
This is one of the great things about the internet. It provides more information to the common people. I just wish people use much more variety search engines and do not depend upon one. Today top search engines influence people in the same way the top media corporations do too.
Sometimes you just need to look in an unorthodox place to find the best results. Don’t be sheepish about it too.
"Free" energy is a fantasy, and nothing more.
Anyone, who thinks that only greedy capitalists charge for energy, should ask themselves why not even socialist and communist nations have "free" energy.
BTW, do you like to get paid for what you do? Why is that?
The Singularity is Near!!!!
And yes this is the real Ray Kurzeil I love Popsci!!!!!!
Thought i might share this Link..
http://www.youtube.com/watch?v=FY-AS13fl30
Its some Redneck tinkering with a home built Tesla Coil in his back yard. Its my native state so... guess I'm a redneck as well
GO SOONERS
@ Quintus
I would agree that nothing was "Proving"
but you have to admit that if<-- IF string theory and The holographic principle pans out.. He could have been onto something.. He understood the principle and potential in resonant frequencies with oscillator he had built
RayKurzweil,
The singularity is near. WOA! That is deep. I feel a sudden black hole in my life appearing just as you mention it. It's like shocking and part of this article. I find myself bewildered and dazed and all turn about. I will sleep on it tonight and maybe by Faraday, I will feel better.
I always find sleeping on a problem to help ills me. I get a kind of magnetic induction as different poles align and shift back and forth, back and forth and back and forth. I call it my Telsa moment in life and very inductive. The oscillating magnetic field is so stimulating and yet relaxing too.
By tuning the sending and receiving coils in his electromagnetic field to resonate at the same frequency and engage only at that frequency that is mutually best. A climax soon develops at this moment (the way glass will shatter when struck by sound waves of just the right pitch), all is well in the cosmos. All is well! ;)
Fantasy/imagination is the beginning of many scientific discoveries. Do you think 100 years ago people would have thought we could have a conversation with someone and be looking at them through a hand held device while theyre on the other side of the world? Mans' reach will always exceed our imagination. Imagination is the driving force of all (well most) great scientific minds and the precursor for every great scientific discovery. If ive learned anything, its that there is no such thing as impossible. We just havent figured out how yet.
nice
@Aldrons Last Hope read Quintas post!
@mp bubba? tomiko? 1 week old. just saying...
How does his comment serve the topic? His comment is to inspire hate and discontent. Please remove his comment and his login. He is just trying to cause problems.
@thirsty123
You and I are on the same page.
@tundrasea
People like getting paid for what they do because currency and credit is an integral part of the society we created for ourselves. However it is not a necessary one. We do not need it for society to function.
Getting paid is the primary form of reward for labor and the currency paid allows you to trade in markets for all the necessary essentials you need to live plus a few luxuries (both concepts are finite yet fluid; you need little to survive, and everything else is a luxury).
Currency is a quantitative item used to gauge the value of products and resources and stands as the primary means of making purhases. It's evolution arose from standard bartering through items such as precious metals, gems, and other rare items of beauty. It eventually evolved into money which was a more quantitative currency measure for even precious items.
The purchasing power of money is based on economic strength which can either build or destroy the value of a given currency. In international commerce, a particular nation's currency has it's purchasing power determined by the world's international financial organization (can't think of the name right now) that regulates and mediate matters of international trade. For this, every nation's currency [based on economic strength] has unequal values. If memory serves me well, all currencies are determined by weights of gold.
The point is, our society has made money a necessity. The reason have not evolved from this is because we're not smart enough to design a better way to live that is less controversial and/or many powers that be do not wish for revolutionary societal reform that would threaten to take away there power.
In a different world Nikola Tesla would have been more widely known by the public with as much credit to science as his counterpart Edison. The fact is power has control over intelligence and money controls who retains the power. In our society, men like Tesla are the conceptual martyrs for a better world but will continue to be bested by those with the motivation to capitilize and profit, and stifled by powers looking to maintain control over their domain.
So free energy will continue to be a fantasy so long as people keep taking it up the ###. No matter what the change is, change begins with revolution, and yes Mr. Kurzweil the Singularity is near.
Tesla was the greatest inventor/scientist of all time. edison had nothing on him. stole a lot of his ideas.
_________________
The people of the world only divide into two kinds, One sort with brains who hold no religion, The other with religion and no brain.
- Abu-al-Ala al-Marri
@inaka_rob, I did read his post, he doesn't seem to know a lot about Tesla...lol.
Happy Conspiracy Thursday everyone.
@inaka_rob: Bingo!
GO GO! Aldrons Last Hope! You are SPARTICUS! Gurrr!
@pheonix1012
nice. sounds like "zeitgeist" to me :D singularity is near indeed.
@jezkieboi
More than zeitgeist, it is the foundation of our civilization, and the most extreme form of tradition. We haven't strayed away from it for a different structured system because we don't understand how to make society work without it, or refuse to put work into changing something that is already tried and true.
As for the Singularity, technological advancement does outpace human advancement due to it's exponential trends. Before we know it we will live in a world that we can not comprehend and that we don't have a place in. A world of our own creation. Societal quantum self-destruction, or rather evolution. An evolution that removes the human condition. Hence, the self-destruction.
The articles picture of Telsa in his Niagara Falls lab with his coils is just another typical average day with electricity. Soon somebody will walk in and deliver his lunch to him on a fold out tray. We are all given to be this is completely safe environment?
@pheonix1012
true. that's why most of the people can't imagine a free electricity for all because we've been living in a system that everything has a price tag on it, a system that does not care for us, yet we are so dependent on it that the thought of unplugging from it is like a suicide to us.
unless we abandon all flawed system that we have invented, for sure, humanity will lead to its self-destruction.
Having studied Tesla for 50 years:
The picture was a trick shot:
Fire the coil, then seat Tesla, illuminated
by flash powder, with the coil powered down.
(Letter from Tesla, reprinted in one of the
reprints of Colorado Springs Notes.)
Tesla patented hugely from such of his patents as
were useful. He was, at one time a millionare,
personally, when a million was real money.
Tesla spent the money trying for wireless power. He
promised JP Morgan certain things, took Morgan's
money, did not deliver.
'many' people had been 'inventing' 'wireless
communication' since the 1870s: cf Mahlon Loomis.
Indeed, Tesla contributed much for which he is not
recognized. Perhaps if a bit more accuracy were
employed in some of the 'claims', he would be
better understood.
There is no indication Tesla lit '200 lamps across
25 miles': the only photo of lights provided by
Tesla is identified by Tesla as '...taken outside the
lab door...'
It would be interesting to have numerical values
for the efficiencies measured for 'wireless systems'.
(Hint: wired efficiencies are 90+%....)
@pheonix1012
i agree with what you say in this article. that's 100 percent true. we are so used to doing the same routine everyday that we forget the true reason for our existence. since we are kids they "implant" into our minds that a good paying job is necessary for us to move forward in life. we have been brain washed. money and power seem to be the main topics in our society. its sad. i just hope that one day we make a dramatic change in human civilization that enhanced our well being and purpose in life. think about it, we spend most of our lives slaving for the economy that we barely have time to explore life and expand our horizons. its like a mental "asylum" and we are being feed pills on regular basis to control us and keep us in check. making sure we dont stray far from the group.
_________________
The people of the world only divide into two kinds, One sort with brains who hold no religion, The other with religion and no brain.
- Abu-al-Ala al-Marri
Lizzie - congratulations on writing an article that shows your complete lack of understanding of electromagnetism. I cannot believe someone else didn't already comment on this. First, no one transmits "electricity" wirelessly. You can transmit energy in the form of an electromagnetic wave (...such as light). "Electricity" requires the transmittal of electrons - thus matter. Electromagnetic waves aren't hampered by such things as a vacuum.
You clearly don't understand what conduction, or induction is, or the difference!
Current doesn't "jump the gap". A time varying electric field (such as is established by an alternating current) creates a magnetic field, which induces an electromagnetic potential (EMF, or voltage). This INDUCED voltage causes current to flow, following Ohm's law. The energy passes through the "gap", just not in the form of an arc.
Electric energy doesn't become "airborne" like some virus, and time varying electric fields induce magnetic fields, which induce electric fields, which induce magnetic fields, and so on and so forth. This is how the electromagnetic wave is propagated (hence why it's called electromagnetic).
The contact plates in a toothbrush are just like the contact plates on a battery charger - a small DC voltage is always present on them. When something connects across the two plates, electrons flow from one to the other (conduction).
Soljacic either used a high frequency to generate electromagnetic waves to induce a voltage remotely, or he's using a low frequency so the near field is large enough to have the receiving location well within it (I believe this is what is being done, but am not sure). Either way, the energy doesn't "skip over" the people in-between the two. The energy flows around and passes through them in the form of electromagnetic waves.
The point of this is it's still dangerous to you, especially in high power amounts. Your body acts as an antenna in these energy fields, and a voltage will be induced on your person; the more power that is transmitted, the more voltage will be induced on you. If the voltage is high enough, it can cause enough current flow in your body to override your brains commands. Voltages higher than this can cause permanent damage.
Someone with so little knowledge should not be declaring "probably not". Give me some proof.