news.bbc.co.uk — A clean-cut vision of a future freed from the rat's nest of cables needed to power today's electronic gadgets has come one step closer to reality. US researchers have successfully tested an experimental system to deliver power to devices without the need for wires.
Jun 7, 2007 View in Crawl 4
vincenoirJun 8, 2007
Tesla was the master of this technology as well as many others. There is not one electronic device that we use today that doesn't owe Tesla a nod for creating the technology. And yet, he is not the person to receive the credit for many of these things. How sad when most of the population of Earth functions on puny minds.
chrisrobJun 8, 2007
vertinox"and secondly Edison's Westinghouse AC power was becoming the standard."Actually it was Tesla who partnered with Westinghouse to make wired AC power distribution the standard. Edison would not listen to Tesla saying "AC was a good idea, but impractical." Edison wanted to make DC power distribution the standard. So if wired AC killed wireless then Tesla was the culprit.evan121203Cool idea of using wireless to power cars. Just lose the batteries completely, weight goes down, efficiency increased, lots of money to be made building the infrastructure. Google would probably want to wire their area for wireless powered cars.
dealcrackerJun 9, 2007
Matamoros' comments are completely correct. Having worked with this stuff for many years, I can tell you that the biggest problem with any of these schemes is efficiency. The article didn't discuss this issue, but in a world that is struggling to harvest enough energy to keep up with the demand, a system that is even 50% efficient is not acceptable. Unless these guys have had a major breakthrough in bending the laws of physics, I would say that there efficiency is < 1%.There are some practical uses for this kind of technology. For example, many RFID systems use this method to power the RFID tag. Some retail security system use this principle to detect the resents of a security tag on a product. Tagnetics make an Electronic Shelf Label system that is used on grocery and other retail store shelving to display product pricing. The system consists of LCD display modules that receive power and communication using this same wireless principle. The reason that the system is practical is because the display modules are extremely low power and are close to the transmitting antennas. <a class="user" href="http://www.tagnetics.com">http://www.tagnetics.com</a>
adammharveyJun 10, 2007
its nice to see everyone actually giving credit to Tesla, poor guy died alone and broke in NYC apartment.
satori3000Jun 11, 2007
The BBC really needs to word it's articles more clearly. Tesla did this already prior to funding being cut. There were problems though. Reprorts are that light bulbs would simply light up. The downside was that there was considerable arcing going on around fire hydrants etc. He ended up blowing the local power station for a day or two... that's how morgan ended up catching wind of what Tesla was up to with free power... Still, Tesla did complete experiments on this long before now.
jrfleschNov 2, 2007
ender... you are completely wrong in your assumptions. The loops do NOT have to be so large. see www.Tagnetics.comThis is an electronic shelf labeling solution for grocery stores in which every electronic price tag has an inductive loop.
gorbyathomeDec 27, 2009
Ok everyone how about this:when you connect three dud 1.5v cells to a 4.5v bulb they barely light it but when you connect them to a tesla coil and stand ten feet away they light a 40 neon tube,?And another thing,tesla sent power 26 miles away to power an electric car,which,by the way was frequently seen travelling at more than 90mph!,only to discover that he was receiving 95%of the current sent,other reports state 99% efficiency!My point being that there is free energy in the atmosphere which carries the current to perfect efficiency if sent at the right resonance.My opinion is if you connect a battery to wires without transmitting the energy then the copper wires consume the power.You try connecting a cell to a length of cooper wire and see how long the cell keeps its energy,not very long!I feel Tesla will make a comeback