Scientists Invent Wireless Electricity Beaming

The higher the voltage the larger the magnetic field, you are talking about extreme voltages in your house with couch sized transformers at every outlet!!

With a high enough voltage you probably could get a 100/1 ratio output, but your house would be nothing but a big substation!

YOU CANT HAVE ELECTRICITY WITHOUT WIRES FOLKS!!!

This is one we can put to rest!!!!!!!!!!

There is no way you will ever get free elctricity!!!!!

Ok Im game here, magnetic induction is the basis of transformers right, but those wound coils are millimeters apart! Explain to me how induction can be attained at such vast distances, and when I say vast I meen 4-5 feet!

the link provided says they have a 2 foot coil...so much smaller then a couch and they get 7 feet with 40% effeciency.
Its MIT so their not lying.

news.bbc.co.uk...

The system exploits "resonance", a phenomenon that causes an object to vibrate when energy of a certain frequency is applied.

Instead of using acoustic resonance, WiTricity exploits the resonance of low frequency electromagnetic waves.

In the experiment both coils were made to resonate at 10Mhz, allowing them to couple and for "tails" of energy to flow between them.

"With each cycle arriving, more pressure, or voltage in electrical terms, builds up in this coil," explained Professor Pendry.

Over a number of cycles the voltage gathered until there was enough pressure, or energy, at the surface to flow into the light bulb.

but they only turned on a light bulb...
they also state

"This was a rudimentary system that proves energy transfer is possible. You wouldn't use it to power your laptop.

[edit on 8-6-2007 by junglelord]

In simple terms does this mean they just took a very large coil and used inductance to get the electrons bumping around in another coil across the room which was connected to some circuitry to change the wave form so that it could power the light bulb ?

Some one posted above about this not being healthy, I dont know if it would be or not. Would think that since its only a couple of hertz it wouldnt be so bad, cell phones and house current are way above that. Your probably frying more brain cells typing on the computer and looking into the monitor. Did you know that an old tv (not lcd/plasma) uses in excess of 25000 volts ?

Yeah! Even more poorly understood and grossly understudied effects of long term high end exposure to electromagnetic radiation for the lot of us on the way, the more the better.
If Tesla had been as brown-nosed in as Edison was, we wouldn't have power bills in the mail box every month, we wouldn't need to replace our lightbulbs (ever), and nobody would have ever even heard of Marconi. Not sure why this is being called a new invention though, the idea of transmitting electricity has been around since the 19th century, and maybe a hell of alot longer than that if you buy into some of the more controversial 'lost' ancient technologies.

Electromagnetic induction of electricity is certainly nothing new. Every single transformer on the face of the earth uses it, you wouldn't be able to plug anything other than a light bulb into an electrical socket if it wasn't for EM Induction.

[EDIT] You wouldn't be able to generate electricity other than chemically either. [/EDIT]

The greater the distance, the more energy is lost though. This is due to how the magnetic field is weaker the further you get from it (obviously).

The trick is in harmonizing the two coils so they resonate together, and adequately 'aiming' the EM field at the receiver, and in turn, 'aiming' the receiver at the transmitter. This is done by placing EM reflective parabolic antennas behind the transmitter and receiver. (Or however else you want to aim the field).

Tesla indeed already had this covered. But the transmission towers would have to be placed rather close to the homes you wanted to beam energy to... and there would still have to be cables running to the towers themselves.

Not an efficient means of transmitting energy by any standard. But still fun to play with.

Go grab a spare florescent light tube (the energy savers are fine), and bring them near your city's power lines (the huge power cables going from city to city). Wait till night, and either stick them in the ground, or ground them another way. (Sometimes you don't even need to ground them for it to be bright enough.)
You will see the light glow... it's a cool trick, especially if you are camping near overhead power lines.

[edit on 9-6-2007 by johnsky]

WRONG WRONG WRONG WRONG!!!

I'm a Master Electrician, and would be happy to debate this with ANYONE!!

Electricity works by a procesess of "bump and move" kind of like if you had 10 golf balls all lined up in a row touching each other, hit the first one and the last one moves, and this is propelled by voltage.

Why must you be so belligerent and arrogant??? It is possible that others are aware of things that you have not studied!

This isnt radio waves or cell phones people, its electricity!!

Yes and no

Ok Im game here, magnetic induction is the basis of transformers right, but those wound coils are millimeters apart! Explain to me how induction can be attained at such vast distances, and when I say vast I meen 4-5 feet!

Evanescent wave coupling , Resonant inductive coupling (This is what junglelord and johnsky are talking about in their recent posts.) Look it up...

This is one we can put to rest!!!!!!!!!!

There is no way you will ever get free elctricity!!!!!

There are thousands of solar panels that beg to differ.


I like others wonder what the unknown side effects might be of such a device. I cant help but think of the X-ray shoe sizer that gave off harmful doses of radiation to many people before it was found that high doses of x-rays are dangerous. Or Tesla's microwave sauna

Perhaps there should be some study to find out if there are any unknown seriously harmful side effects before rushing into production???

[edit on 9-6-2007 by Heckman]

Originally posted by redseal
WRONG WRONG WRONG WRONG!!!

Im a Master Electrician, and would be happy to debate this with ANYONE!!

Cool, let's go! I've got a masters in EE and just about one in physics (one more year, yay!)

Electricity works by a procesess of "bump and move" kind of like if you had 10 golf balls all lined up in a row touching each other, hit the first one and the last one moves, and this is propelled by voltage.

Nope. I know they teach that to electricians but it's just flat wrong.

The potential across the wire causes a bias in the drift velocity. See also: Poynting vector.

Voltage is "electrical pressure" kind of like how a water tower works with water pressure. Voltage propells electrons through the wire, in essence the wire "moves" or so do the electrons in it.

Essentially, the electrons are buzzing around like bees in a hive. Randomly. No voltage across the conductor and they're totally random - no net current. However, random fluctuations in their motion may stack up a few more here than there, and the resulting potential is called "Johnson-Nyquist noise"

Air has none (or little) of these properties.

Air has few free charge carriers in a non-ionized state.

Tesla was able to create electron movement through the air by producing extremly high voltages (25,000v I read some where)at one end and a negative charge at the other as how lightning works, with minimal success This is a far cry from the 120/240 v in your home today.

And such as with lightning if you did get in the way of the current, you would be fried!!!

This isnt radio waves or cell phones people, its electricity!!

Yes, you're trying to discuss inductive energy transfer as if it were straight conduction, since you're familiar with Romex. Sorry, this isn't the same. Nice try though.

Originally posted by Ahabstar
Claps for scientists that still ripoff Tesla without giving credit

By taking a $20 crystal radio set from Radio Shack and clipping the leads to the speaker and ramping up the energy through a series of capacitors you could power a light bulb, a small generator....basically whatever you wanted to power.

Actually, no, you can't.

Harnessing the power of Rush Limbaugh's mouth to light your house...yep, Tesla was ahead of Marconi too. Just don't ask the military where they got the idea for UAV's. Or IBM for the idea of microprocessors.

IBM didn't invent microprocessors. Intel did. And you really should put down the Cheney book, she's woefully inadequate as an author. Tesla invented a simple logic gate that was RF based - other than Tesla's demo, no logic works that way. At all. And relay logic predates it. So he didn't "invent the microprocessor". Nor about 50 other things Cheney attributes to him.

Originally posted by redseal
Ok Im game here, magnetic induction is the basis of transformers right, but those wound coils are millimeters apart! Explain to me how induction can be attained at such vast distances, and when I say vast I meen 4-5 feet!

There's the real question. Power coupled between two coils falls off inversely as the sixth power of the distance.

As soon as I get a few minutes here I'll crack open his paper, it has something to do with resonating the pickup coil, I think. Reading pre-chewed stuff on the net isn't proving very useful.

What's the incentive to implement this technology for corporations? Is it possible to regulate usage? My father told me about Tesla and this technology back in the early 90's, I recall the reason why this technology wasn't pursued was because it could not be subscriber based like our current wired system.

Originally posted by Ahabstar

Just one question, how many volts could a human take at 0.1 microamps, wired or via air?

You'd need to know his impedance at the time - it depends a lot on skin conditions. Wet skin at entry and exit points will give you much less resistance.

Houses are 120/240V at 80 Amp but a 60W incandescent bulb doesn't need anywhere that amount of Voltage nor Amperage to be lit since 1W=1V*1A.

It doesn't work that way. Yes, 1A flowing through a 1V potential difference is a definition of 1 W of power. But you don't get to pick all the variables. The 60W bulb has a certain resistance (although it varies all over the place with temperature). So basically, you get to pick one thing and the other just happens. So if I have a 60W bulb, let's say it has a hot resistance of about 200 ohms. If I put 110V RMS across it, I'll get 60W RMS of power dissipated in the bulb.

But if I put 1V RMS across it, I'll get 5mW of power dissipated across it. I don't get to pick both voltage and current, whichever I choose to set, the other just happens, that's caused by the fixed resistance of the bulb.

Safety an issue, the 60W bulb could have been lit by 60000V at 1millamp. Neat yeah, but not overly efficient as the 60000V still have to be generated.

No. If I put 60kV across a bulb intended to dissipate 60W at 110V, I'll instead have a 18MW bulb for a nearly instantaneous amount of time. Again, you don't get to choose every parameter.

Originally posted by redseal
The higher the voltage the larger the magnetic field, you are talking about extreme voltages in your house with couch sized transformers at every outlet!!

With a high enough voltage you probably could get a 100/1 ratio output, but your house would be nothing but a big substation!

YOU CANT HAVE ELECTRICITY WITHOUT WIRES FOLKS!!!

Actually, it has more to do with the current and the number of turns. But you seem to be conflating a lot of different unrelated things here in a really confused way.

Originally posted by R3KR
In simple terms does this mean they just took a very large coil and used inductance to get the electrons bumping around in another coil across the room which was connected to some circuitry to change the wave form so that it could power the light bulb ?

Some one posted above about this not being healthy, I dont know if it would be or not. Would think that since its only a couple of hertz it wouldnt be so bad, cell phones and house current are way above that. Your probably frying more brain cells typing on the computer and looking into the monitor. Did you know that an old tv (not lcd/plasma) uses in excess of 25000 volts ?

He's using about 10MHz, not a couple of Hz. But the voltage thing just doesn't apply in any meaningful way.

You are actually in the near-field of a very large but grossly inefficient radiator - the 60Hz transmission system in the US. The field it produces is somewhat similar to what he's talking about, but it's a lot lower frequency.

Originally posted by wingman77
What's the incentive to implement this technology for corporations? Is it possible to regulate usage? My father told me about Tesla and this technology back in the early 90's, I recall the reason why this technology wasn't pursued was because it could not be subscriber based like our current wired system.

I'm not a Tesla-maniac. But in this case, it won't transmit power an unlimited distance. While I'm not up on the coil structure and resonance trick he used (yet) it's a near-field H-field coupling of some sort.

That will not propagate any useful power past the lambda wall, which is set by the frequency. For 10MHz, it would be about 3.5 meters. To radiate past that, it would have to decouple from the coil and propagate as a radio wave, and the design will be such that the E-field component you'd need won't be available.

Good posting tom.

Is there anyway I could get you to email me a copy of that paper???

[edit on 10-6-2007 by Heckman]

Originally posted by Heckman
Good posting tom.

Is there anyway I could get you to email me a copy of that paper???

[edit on 10-6-2007 by Heckman]

Even better, I found a preprint on arXiv!

Still haven't gotten enough time to give it any serious reading yet. Have a research paper I have to vet and a PLL problem on a board here.

Well I stand corrected it is not magnetic induction alone, according to the paper it is long lived oscillatory electromagnetic modes, with localized slowly evenscent field patterns for mid range applications, 3.5 meters.
Where as magnetic induction is only applicable to short range applications.
Resonance is the key to the device as I did make the statement that resonace coupling is critical to understanding the system.
but hey you cannot be correct about everything and its good to admit your mistakes and learn something
cheers

Sorry for not reading the whole threat. But didnt Nikola Tesla come up with this in the early 1900s? Also I think I remember Ralph Ring talking a little about how it works in one of his vid with Project Camelot (see my sig for a link). Pretty interesting stuff though.

-fm

Did any of you watch the video

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