wireless electricity
 

Triggered by some other thread: is this possible in theory?

I was thinking about that a month or so ago.
Wonder if its possible also.

Yes, you need alot of people with very thin hair to stand next to each other, and the first one in the line to rub a balloon on his jumper :thumbsup

lol me and my partner were just discussing how fabulous wireless electricity would be

Jon

Im a liscenced electritian and i would have to say in theory this is impossible.

Atleast on the grounds of what technology we have now.

TRUST me...voltage passing through the air with no set conductor and insulator is bad BAD news.

http://www.impactlab.com/modules.php...ticle&sid=3581
http://www.spaceref.com/news/viewsr.html?pid=9120

http://users.erols.com/iri/wireless.htm

Well there ya go...goddamn rocket scientists.

If I understand correctly your question. Yes it's possible. You just have to think to a lightning.

The air can conduct very huge amount of electricity but the losses would be enormous. So I don't think you will ever see an application for that.

I might be wrong on this ...

i was thinking of this as well

for low voltage items like wireless network cameras

there is something I forgot to mention ... Electricity always take the shortest (in electric resistance)... So if you go through such a "beam" of electricity you would be electrocuted ... not for sure, but most likely...

Wires are kind of useful with electricity ... Sorry guys :winkwink:

I think so.. a company that I used to have a contract with for main stream stuff was working on long distance high speed wireless comunication.. IE would replace the thousands of miles of cable and tele lines that are strung across the country's landscape..

interesting thread

Yes it is possible if you think of a small signal sent out that would then be stepped
up locally.

I saw this thread and was surprised... I read about wireless electricity in a science magazine many years ago... like popular science or something. Maybe 5-8 years ago... I think... I don't think we will see it anytime soon but who knows what they will have in the future.

I bet you never even stayed at a Holiday Inn last night :upsidedow

Didn't Tesla invent something like this?

According to Edgar Cayce (a famous psychic from the early 1900's) Atlantis had this technology. Energy was gathered from the sun through huge pyramids and it was distributed without wires. It was the concentration of energy in these pyramids that effected the earths plates which caused it to eventually sink.

Yes Tesla did work on this idea. Some say he did it too. Nothing is impossible.

Curious, do you or anyone else actually believe this?

LOL :1orglaugh

You're totally right here.
Not only is it 'possible in theory', but Telsa had wotking examples.

He transmitted power wirelessly for hundreds of miles, to small barrels scattered around nearby towns etc. Not only could the power be transmitted, but it could also be singled out to certain barrels.

And something even less people know - he was comissioned to create the first commercial implementation, which he did (for some reason my memory says it was on long island, but don't quote me on that). Sadly it was plauged by mishap after mishap, and the funding never saw the project get to completion.

If you're interested in this, you should grab one of the many books on it. All of this is in his Colarado Springs notes, as well.

But, in a glance-
- Invented the fluro light
- Was transmitting radio signals around the globe while marconi was struggling to get 100yards (he was using FM, marconi was using AM)
- Invented & Patented the first ever AC engine & Generator, but lost the patent to Edison
- etc.

I think it's called "Lightning".

How 'small' is you signal? When you step up voltage, you lose current, and visa versa. You have to have a very very good conductor (read: not powerlines) so your power isn't lost in other forms of energy (heat, etc)

Exact reason why power is distributed at 110kV, 33kV and 11kV

Static electricity != current electricity

I'm not very technically clued but isn't FM 'short' waves and AM 'long' waves?

dont they run internet lines through electrical wires now?

Lol, my first thought when I read the thread title. I've heard a lot of talk, not sure if it's been done though.....

AM hahahaha Amplitude Modulation
FM hahahaha Frequency Modulation

-- meaning, that the radio waves of AM are the same frequency, with a different 'height', FM waves have the same height/amplitude, and have a variable frequency.

Neither one is specifically longer or shorter, it depends on the frequency at which they are transmitted.

IE, if you transmit AM at 2.4GHz, the wavelength is gonig to be much shorter as compared if you transmitted it at 1MHz (ie, say 1cm vs a few KM)

It's been done, and also been rolled out in commercial deployments in various EU countries.

We'll see it more in the future. It'll be standard

I said I wasn't technically clued, what I meant by 'short' was - FM is used for short distance transmission, no? And AM for long?

Could be wrong.
Or, yeah and you completely lost me with all the techn. terms ;)

The problem is not so much to transmit the electricity.

For a power company, the major problem is...how do you bill for it?

Take an apartment building for example. You bill someone by the minute like a cell phone? Because counters as we know them would be obsolete, so you can't do readings of that.

Right.
The reason this wasn't adopted is because it means free power. Where do you put the meter when there's no wires?

Not like you can't steal power wirelessly these days, but yeah. Sucks that capitalism would crush such a major technical advance.

i got some wireless electricity for you


in my pants

Nope.
AM / FM is simply the carrier / method of transmission.
AM is simply older / less accurate / easy to implement (erase as necessary)

1) Lightning is static electricity, not current electricity. Big difference.
2) Ever seen ionized air
3) Won't ever see an application for it? HAven't you ever used a radio / tv / cell phone etc. They transmit throughthe same air... aaaaaaaaaaand

No need to apologise, you're wrong ;)
Obviously again you fail to consider that there is millions of watts in transmissions all around you, 24/7.
You're not dead yet, and I don't see you having to duck under FM radio tranmissions.

The question is rather vague, but if you mean the ability to transfer energy from one place to another without wires between the two places, I can think of dozens of approaches off the top of my head. Solar power is an obvious example...you can plug in a lamp, shine it at a solar cell, and it's converted back into electricity. Wind power is another obvious one...plug in a fan, point it at "wind mill" style rotors connected to an electric motor, and out comes electricity. There are lots of forms of energy which can be converted to and from electric power, with energy forms that are transmitted without wires. Other examples...hydroelectric energy using water pumps to generate pressure and turbines to convert back to electricity, vibrational energy using speakers to generate and piezo transducers to receive, thermal energy using resistors or compressors to generate and peltier junctions to receive, magnetic energy using electromagnets to generate and induction coils to receive, and so on.

If you mean a way to transmit 20 kilowatts to each of 20,000 houses from a central station located two miles away, it would be really challenging, and the inefficiency would certainly make it impractical...converting between forms of energy introduces ineffiencies. Even wireless battery chargers, like http://www.splashpower.com/vision/vision.html , which use magnetic fields to transmit power less than an inch, waste a lot of power compared to plugging in a wire.

When I was young, there was big Long Wave radio transmitters around. A farmer was caught stealing power from one of them . He built a huge spool in his barn and managed to tap it. So electricity can be transmitted wireless with enormous losses.

That's induction, quite different really.