English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

5 answers

Use electromagnetic inductance. This has already been done by a lab at MIT, see references.

2007-01-05 13:46:30 · answer #1 · answered by Anonymous · 0 1

Wirelessly transferring energy?

That's pretty difficult to do considering two things.
1. That electricity will travel different paths depending on whichever path's the easiest for it to follow (most conductive). Think of a forked lightning strike, it's forked because there is moisture in the air at different places, making different places more conductive than others. Now think of trying to control a lightning strike so that it will always hit one place... pretty hard, huh?
2. That you'll need a really strong, opposite charges. Think back to lightning storms. During a lightning storm, the clouds are negatively charged (really negatively charged) so much so that it actually pushed electrons on the earth away deeper into the ground. This makes the earth positively charged. It is only because of these two great charges that lightning will "want" to jump from one place to another. Now if you want to do that with electric devices, you'll need huge amounts of energy to generate the charges just so you can send more energy over... and anything in between will get electrocuted, of course.

A good thing to note is that this lightning strike from one place to another will not happen constantly. It will fire in regular flashes, every time the charge builds up enough so that the electricity can jump.

So I guess wirelessly transferring electricity is not really viable then (unless you are talking small scale, just inches apart). However, I'm pretty sure the US Airforce is coming up with a way to "beam" energy to weapons. They do this by shooting infrared light at a target (plane) and the plane turns this radiation into energy using solar panels...

It hasn't been very successful yet, though.

2007-01-05 17:03:30 · answer #2 · answered by Simplex Spes 2 · 0 0

Microwaves can be used to transmit power over long distances, and post-World War II research was done to examine possibilities. NASA worked in the 1970s and early 1980s to research the possibilities of using Solar power satellite (SPS) systems with large solar arrays that would beam power down to the Earth's surface via microwaves.

There are lots of ways to transmit electricity, they're just not very efficient.

2007-01-05 18:21:29 · answer #3 · answered by greebyc 3 · 0 0

this aint exactly transfering electricity but they have in Lab tests Recharged a cell phones batteries wireless but only 20+ feet so far...They had the base and cell phone at some same frequency...So i predict in the future to charge your cell phone all you'll do is click a button to put it at the correct frequency

2007-01-05 17:31:26 · answer #4 · answered by Anonymous · 0 0

Not really. thats why there are no "truely" wireless devices.

2007-01-05 16:48:39 · answer #5 · answered by gliss 2 · 0 0

fedest.com, questions and answers