Just in a very few years, you may not have to
worry about going to manually plug to charge your cell phone
phone or paying for fuel again.
Wireless electricity isn’t a new concept
A startup company says they
are really working to make a change to that, with a
business model that has the possiblity to make
portable power common.
“We are going to transfer power without using
any kind of wires,” Dr. Katie Hall, chief
technology officer of WiTricity,said to CNN.
“I cannot even imagine how things will
change when we live like just that.”
it was publicly demonstrated over 100
years ago by Nikola Tesla - but has
remained elusive in broad commercial
A team of MIT professors also
developed what is known as “resonant
power transfer,” in which a power coil
is able to wirelessly transfer electricity to
another device containing a similar coil
set to the same frequency.
WiTricity CEO Eric Giler demonstrated the
company’s technology during a TED talk,
in which he explained, “This all came
from a professor waking up at night to
the third night in a row that his wife’s
cell phone was beeping because it was
running out of battery power. And he
was thinking, ‘With all of the electricity
that’s out there in the walls, why
couldn’t some of that just come into the
phone so I could get some sleep?’”
Wireless electricity is widely considered
to be safe , but WiTricity and other
companies developing similar
technology are still trying to find
effective ways to efficiently transfer
electricity over longer distances.
Other companies are developing their
own wireless electricity devices as well.
For example, in February,Toyota
announced it began testing a wireless
recharging station for its hybrid cars in
which the vehicle would power up by
parking over a charging pad on the
The MIT group was first able to
demonstrate the technique in 2007,
which led to the formation of WiTricity.
Since then, the company has conducted
severalpublic demonstrations, where
they have used the technology to
wirelessly power objects such as
batteries, LED lights and cell phones.
“We are not actually putting electricity in
the air. What we’re doing is putting a
magnetic field in the air,” Hall told CNN.
“When you bring a device into that
magnetic field, it induces a current in the
device, and by that you’re able to
It would not only free up literal space
but could potentially reduce pollution,
eliminating the need for disposable
batteries. It’s estimated that in the U.S.
alone hundreds of thousands of
disposal batteries are thrown away each
year. Giles says that the current 50
percent efficiency of wireless electricity
transfer already greatly exceeds the
capability of standard commercial
Giles says that if the hurdle of
transferring electricity over greater
physical distances can be crossed, then
wireless electricity would quickly replace
the world of cables. And after the
technology is in place, manufacturers
would then have to install the
equipment allowing for the wireless
electric transfer to take place.