http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/ Engadget Comments for http://www.engadget.com/media/feedlogo.gif http://www.engadget.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:07AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
This is cool if they pull this off, safely.]]>Jul 24th 2009 8:08AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
I mean who ever imagined the idea of porn flying from room to room wirelessly, a salute to you Sir]]>Jul 24th 2009 8:15AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 9:11AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
And you assume that the Ph.D.s who developed this technology never thought about that? Quote from Wiki:
"By utilizing in particular the magnetic field to achieve the coupling, this method can be safe, since magnetic fields interact weakly with living organisms."

Ie., you wont be cooking yourself when you charge your cell phone, in fact, that's the *exact* thing that makes this technology newsworthy.]]>Jul 24th 2009 9:50AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 11:17AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 12:22PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
don't the transmitting coils oscillate at a frequency that's too high to affect humans? how would scientists be able to experiment with this if it messed with their body every time they went to work.]]>Jul 24th 2009 12:25PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 5:05PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 5:08PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 29th 2009 9:33AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:08AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Then again, it's about time someone is making an effort. ]]>Jul 24th 2009 8:21AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Why would it have been free?]]>Jul 24th 2009 9:18AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 9:21AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://en.wikipedia.org/wiki/Wireless_power#Resonant_induction
http://en.wikipedia.org/wiki/Evanescent_wave_coupling

Tesla didn't come up with this 100 years ago, that would be quite an insult to 20th century science and the invention of quantum physics.

The modern method is different from (and much more sophisticated than) Tesla's concept, which would've been incredibly inefficient, impractical, and would waste tons of power.]]>Jul 24th 2009 9:41AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
umm, Tesla supported AC, Edison supported DC. AC was used to shock animals, not the other way around.]]>Jul 24th 2009 9:54AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 9:59AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
But yes, Tesla was awesome, a huge chunk of modern electric components can be credited to his genius. ]]>Jul 24th 2009 10:12AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:24AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:16AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:50AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 4:40PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
*bows down*]]>Jul 24th 2009 8:21AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/It's BBC News

http://news.bbc.co.uk/1/hi/help/7895116.stm]]>Jul 24th 2009 8:35AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:28AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 11:40AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
http://www.wipower.com/PRESS_Files/WiPower%20White%20Paper.pdf
]]>Jul 24th 2009 3:20PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
Or maybe something completely different and I'm totally wrong. Cool idea, though.]]>Jul 24th 2009 8:28AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 12:28PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:36AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 10:33AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
Yeah. I'm good. Thanks though. You can keep that.

It's Provably technology funded by the AMA and the oncology alliance. Which makes this the cash cow of universal healthcare. Let's see how the UK handles it. ]]>Jul 24th 2009 8:43AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:40AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 8:40AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 9:06PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
No matter if it is magnetic or electromagnetic, they need to get VERY close to have some kind of reasonable energy transfer. If it is magnetic, then it's just a transformer where primary and secondary coil are not connected by a core. This is rather old technology, but nevertheless now pursued by a number of companies to charge gadgets without plugging them in anywhere.

If it is electromagnetic however (video does not play here), then they may get into trouble with many countries' laws regarding the abuse of electromagnetic energy. People have found out many years ago that you can easily enlighten a lamp near a radio transmitter if you connect it to two suitably placed wires.

Venture capitalists will love it though...]]>Jul 24th 2009 8:41AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
how do you stop people leeching off your power waves?]]>Jul 24th 2009 8:48AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
The only time wireless power, wireless charging become a worth while tool is when everyone has free energy. The days of Fusion.
The days when we never have to worry about depleting resources and insanely high energy bills.

Anyone in the Uk will tell you how shocked they where when they looked at there last power bill.

I do like how Witricity has been quiet on its actual effective % power transfer. Maybe its still really low like 15-50%
]]>Jul 24th 2009 8:51AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 9:23AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/No!!!! Dont invent cars- they are so inefficient!!]]>Sep 25th 2009 8:06PMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
Also, I thought it wasn't good to keep devices continually charging, which I suspect will happen with people constantly leaving the transmitter plugged into a socket.

An OLED screen on the wall without wires would be good though.]]>Jul 24th 2009 9:12AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 9:24AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 9:14AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
http://fwd.five.tv/gadget-show/videos/news/ortis-in-america
]]>Jul 24th 2009 9:21AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
But, I'm wondering even if it is inefficient, maybe it doesn't matter. You can think of the wasted energy as the fee for convenience. If the source doesn't use much power, and the devices you run don't require much energy, nor do the devices need to be powered everywhere or all the time, then maybe this idea isn't so bad after all. You can place your cell phone on a mouse pad like device and it will just "soak up the juices".

Perhaps when they figure out sustainable fusion power, or get hyper efficient solar cells, so that power is essentially free, Tesla's idea will then be practical to implement.

]]>Jul 24th 2009 9:51AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
Coupled devices can be a lot more intelligent than they were in Tesla's day. I imagine you cell phone would send a signal to the transmitter when it is in use or finished charging. Further, it seems to me that there would be very little power lost in this system when not in use, even if the device is alway on, because P=V^2*R. The resistance (or in this case impedance, principle is the same) is nearly 0 if nothing is receiving the power. Only when something is receiving the power will there be an impedance in the transmission of signal.]]>Jul 24th 2009 10:34AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/Jul 24th 2009 10:21AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/We all know how inefficient that was at Tesla's time.]]>Jul 25th 2009 4:10AMhttp://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/http://www.engadget.com/2009/07/24/video-witricity-is-back-promises-wireless-power-within-18-mont/
Yes, I read the original article, and I read all the links from it. The main criticism of such technology is that the power is broadcasted. Think of shining a flashlight on a postage stamp from 3 feet away. The light will reach the stamp, but look at the the area of light that misses the stamp. That energy is wasted, and that wasted area is vastly larger than the area of the postage stamp. Neither this link nor any of the followup links address this problem, they talk about building a more efficient "flashlight". Unless they address that, this 100+ yearr old idea will still be plagued by this problem.

But, like I said originally, maybe this problem is not an issue if electricity gets super cheap, or if devices require such little power that the flashlight could have a very dim light. Neither of those conditions have been met yet. So I think this technology will be shelved and revisited later.

]]>Jul 26th 2009 3:29AM