posted on Feb, 4 2012 @ 08:05 PM
Originally posted by flexy123
The concept of wireless power and wireless charging can not be THAT new.
I had an electric toothbrush which charged "wireless" and this was already waaaayyy back in the 80s. It's called induction or something.
No, it's not that new. And my toothbrush charges in the same manner. It's called "inductive coupling", and refers to the relation between 2
inductive coils with eachother.
A circuit is made to simply create an electromagnetic field through a coil, which is picked up by another coil that is within a designated proximity -
the proximity decides the strength of the signal, voltage, etc, and a lot of current consumer technology won't allow for an effective signal for over
more than a couple of meters - if that. They're still showing off tv's that can sit a meter away from the wall (over a hundred years later - ha!)
Inductance = The ability to store energy in a magnetic field through an "inductor" (a coil)
Coupling = Relating 2 items to eachother.
To say 2 items are "inductively coupled" means they are mutually transceiving energy
That being said, nikola tesla demonstrated wireless energy transfer over a distance of just under 50km (or 30 miles) in the very late 1800's.
Although it's not necessarily new, the topic is often brought up time and time again due to our demands on such resources, as we find new methods of
using inductive coupling.
And in a world where companies still have years worth of capital in a desired industry, it would be naive to think they would give that up for the
"better" of man.
It's just one of those things