Your phone just notified that the battery is dying and you
just got comfortable with your sleeping position but u need your phone fully
charged for tomorrow; what should you do now? We face these kind of situations every now and again, and
as a result we have to sacrifice either the comfortable sleeping position or
the feeling that your phone is fully charged for the next day. Sacrifice no
more, because wireless electricity is on its way to the rescue.
No, I don’t mean those inductive charging pads, when I say
“wireless” I mean wireless! Those pads are really not wireless, are they? The
transmission of electrical power without using solid wires or conductors is
known as wireless power transfer. Technology has leaped so far ahead that it is
now possible to provide power to electrical devices over the air (wirelessly)
within a set range, however, the technology is still fairly new.
So how does it work?
Transmission of energy to a receiver from a transmitter
through oscillating magnetic field. The is achieved by – the power source supplies
direct current, which is then converted to alternating current by the help of
specially designed electronics constructed into the transmitter. A copper wire
coil placed inside the transmitter is energised by the alternating current,
once the coil placed in the receiver is within the proximity of the magnetic
field, alternating current is induced in the receiving coil by the field. This
alternating current is converted back to direct current by the electronics and
hence it becomes usable power. 
People may be concerned about the safety issues, as this
will mean that electricity will be going through our bodies; however,
specialists have already replied to that saying, it’s not dangerous at all
because it works the same way as our Earth does, using magnetic fields. In some
cases it may even be safer when compared to wired technologies.
So, do you think wireless technology is the way to power and
charge out electronics in the future? I certainly think so!
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