2007-04-09 22:12:11 · 18 answers · asked by jammy 4 in Science & Mathematics ➔ Engineering
I mean commercially is it possible...
2007-04-09 22:18:19 · update #1
Electric current occurs when an electron jump from one molecule to the next. The electrons move through a path that is most conductive. Air, unfortunately is not very conductive and it is also very difficult to provide a clean path. It takes a magnitude of a lightning for the electric current to travel in air. And as you know, it is very unpredictable because the electric current witll land at any conductive path it finds such as a radio tower.
If you want to transmit engergy through air, it is a differnt story. Radio wave and light are both energy that can be transmitted through air. But anything in the path will get "energized" as well. A high power laser hitting a car or a microwave hitting a bird. They both get cooked.
Wireless electricity transfer could be wonderful for some applications. The induction charging has already found an excellent use for bathroom appliances like that toothbrush. I assume that the charging stand is water-proof and with no electrodes there is less chance for elecrtocution.
If efficiency could be improved it would be cool to be able to just put a computer in a room and turn it on. No plugs at all, all wireless info and wireless electricity. I think that would be pretty nifty anyways.
If efficiency could be improved with the microwave transmissions perhaps we could solve a lot of energy problems by harvesting solar power in space and beaming it down. The US wanted to start that program by 1980 I think, but unfortunately 10 sq. km solar panels were needed and they would lose 90% of the energy in transmission if I recall right. I might be exagerating, but I do remember that the real figures were at least as incredible.
2007-04-11 00:25:17 · answer #1 · answered by Sharma, Dr. Vinay k. 4 · 4⤊ 0⤋
yes, and no. for example, when you turn your radio on, the radio waves that transfer the sound are energy. so technically, yes, you can. however, what you mean to ask is whether a lot of energy can be transferred wirelessly. the answer is still yes. when you put something in your microwave oven, energy is transferred wirelessly to the food. still not where you want, i'm afraid. many years ago, there was a radar station/antenna at ground level. you might note that your microwave uses similar energy. All of the vegetation, for a couple hundred yards in front of it had been killed. a photographer, with a bunch of flash bulbs walked out in front of it. all the flash bulbs went off at once. burned him pretty bad. but, we're getting closer. and the answer to what you wanted to ask, "can i have my laptop work anywhere, with energy radiated from a wall outlet?" is probably no. at least not with the technology that we have today.
2016-04-01 06:41:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Yes. Have you ever been shocked after walking across the room in the winter time with a static charge? If so you were just part of an electrical transferr which happened wirelessly. Anouther example is a lightning bolt --- no wires their!!.
2007-04-09 22:16:08 · answer #3 · answered by daddyspanksalot 5 · 1⤊ 0⤋
ya
why cann't?
every electromagnetic signal transformation is wireless transformation of electricity. although not very high voltage.
in early 1900 some scientist like marcony & tesla tried to transmit the power by microwave. they used the coupled tuned circuit oscillator and nikola tesla was succeed in transmission of significant amount of power.
commercialy it is still not possible because of negative health effect of such type of devices. such powerful focused beam of microwaves can causes of health hazards.as
well as it is not so economical, because loss of power is about 5% which is almost equal to the losses in wire transformation.
2007-04-10 05:43:28 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Sure!
All radio and TV transmission, is nothing but electromagnetic waves being sent over some distance--without wires!
When the wave-length becomes very very small, we call the transmission as microwave transmission, and that is what is used for mobile phones.
In all cases, it is transfer of electricity --without wires!--and hence it is called "Wireless Transmission"!
2007-04-09 22:23:01 · answer #5 · answered by thegentle Indian 7 · 1⤊ 1⤋
Absolutely, look up Nikola Tesla. He had inventions that would be able to power airplanes trains ships and cars, all through transmitting electricity through the air.
2007-04-09 22:21:28 · answer #6 · answered by Duncan M 4 · 0⤊ 1⤋
No..it`s impossible..
Electricity can not B transfered between two objects until & unless there is a transfering mediaum btn them (like wire)
2007-04-09 22:44:55 · answer #7 · answered by swaagat143 4 · 0⤊ 2⤋
yes it is possible to transfer electricity wire lessly but it is not easy to control it. its like impossible...
commercially it is not possible at all...
your thinking is very good...
i'm happy to give answere to such a good question..
2007-04-09 22:23:27 · answer #8 · answered by karan s 2 · 0⤊ 1⤋
Surely. In future we will have "DTH" Direct To Home receivers for electricity. We will not have giant transmission towers and loss in transmission.
2007-04-09 22:50:32 · answer #9 · answered by jayrajaguru j 1 · 0⤊ 1⤋
yes,because electricity is carried by electrons and eiectrons also have dual nature of matter and radiation,this wave nature will enable us to do this,and magnetic field will act as cover
2007-04-09 22:54:09 · answer #10 · answered by Anonymous · 0⤊ 1⤋