[quote] By leaching off the ambient radio signals, the camera gathered enough energy every 35 minutes to take a snap.[/quote]
Really useful guys....
It's not even good for powering bugs, you'd have to boost all wifis without anyone noticing.
[QUOTE=Cmx;47883834]Really useful guys....[/QUOTE]
Yes because it's not like it's the beginning of a new technology or anything... It should power EVERYTHING RIGHT NOW!:rolleye:
This'd bring a tear to Nikola Tesla's eye if he were still with us.
[QUOTE=Lunakrypt;47884372]Yes because it's not like it's the beginning of a new technology or anything... It should power EVERYTHING RIGHT NOW!:rolleye:[/QUOTE]
I don't see the immediate way to improve the throughput without, though. I don't think it'll scale very well.
[QUOTE=Lunakrypt;47884372]Yes because it's not like it's the beginning of a new technology or anything... It should power EVERYTHING RIGHT NOW!:rolleye:[/QUOTE]
It's not the beginning of a new technology though.
Tesla constructed a wireless power transmitter over 100 years ago. Saw an archaic working one at a museum of technology once. Reason this technology is not widespread is that nobody has, in it's 110 year history, found a way to make it worthwhile. Will anything change in 100 years? Unlikely, unless we have devices that require absolute minimum amounts of power, so little that they might as well just harvest kinetic energy of the thing they're attached to or use batteries that last for years or a plethora more viable energy sources.
[QUOTE=Drury;47885307]It's not the beginning of a new technology though.
Tesla constructed a wireless power transmitter over 100 years ago. Saw an archaic working one at a museum of technology once. Reason this technology is not widespread is that nobody has, in it's 110 year history, found a way to make it worthwhile. Will anything change in 100 years? Unlikely, unless we have devices that require absolute minimum amounts of power, so little that they might as well just harvest kinetic energy of the thing they're attached to or use batteries that last for years or a plethora more viable energy sources.[/QUOTE]
The first electric car came into being in the mid 1800s. Look at electric cars now making a come back. Just because something has been done in the past and wasn't used doesn't mean it can't be done now.
Something in the paper but not in the BBC article:
[QUOTE]Using this, we charge a Jawbone UP24 device in the vicinity of the PoWiFi router from a no-charge state to 41% charged state in 2.5 hours.[/QUOTE]
This is where I think it could really come in. All these little devices like that, that will become increasingly more common in the future could scrap USB ports or whatever connectors they have to charge them and charge themselves up over WiFi over night. It's like slow-mo wireless charging that could be integrated within WiFi routers rather than having a separate dedicated device for it.
The future is here, hope this tech is adapted and we say goodbye to current charging methods.
[QUOTE=Lunakrypt;47884372]Yes because it's not like it's the beginning of a new technology or anything... It should power EVERYTHING RIGHT NOW!:rolleye:[/QUOTE]
Well it's a pretty neat experiment but I doubt it will have any real applications. I mean according to a quick Google search a router's power output is about 100 mW, and your device will only receive a fraction of that. You won't be powering anything big with that.
If you're talking about wireless power transmission in general this has been around for ages.
[editline]5th June 2015[/editline]
[QUOTE=Morgen;47885454]This is where I think it could really come in. All these little devices like that, that will become increasingly more common in the future could scrap USB ports or whatever connectors they have to charge them and charge themselves up over WiFi over night. It's like slow-mo wireless charging that could be integrated within WiFi routers rather than having a separate dedicated device for it.[/QUOTE]
You could just turn off your router and charge your device normally, it'd be a lot more efficient.
[QUOTE=Kljunas;47886249]
You could just turn off your router and charge your device normally, it'd be a lot more efficient.[/QUOTE]
Yes, but with small devices like this convenience is often more important than efficiency.
[QUOTE=Kljunas;47886249]Well it's a pretty neat experiment but I doubt it will have any real applications. I mean according to a quick Google search a router's power output is about 100 mW, and your device will only receive a fraction of that. You won't be powering anything big with that.
If you're talking about wireless power transmission in general this has been around for ages.
[editline]5th June 2015[/editline]
You could just turn off your router and charge your device normally, it'd be a lot more efficient.[/QUOTE]
Routers are capable of far more than that for power output though. The FCC would through a shitfit if home routers started using more than that though. (Licensing on power output is how the FCC controls router range)
[QUOTE=Levelog;47886850]Routers are capable of far more than that for power output though. The FCC would through a shitfit if home routers started using more than that though. (Licensing on power output is how the FCC controls router range)[/QUOTE]
another problem with increasing the power output of routers is you are going to start clogging the 2.4 and 5ghz channels even more than they currently are
especially if they start transmitting noise whenever they aren't being used.
[QUOTE=Cmx;47887829]another problem with increasing the power output of routers is you are going to start clogging the 2.4 and 5ghz channels even more than they currently are
especially if they start transmitting noise whenever they aren't being used.[/QUOTE]
2.4 is beyond saving. 5ghz has a lot more potential than 2.4 ever did though.
[QUOTE=Levelog;47887837]2.4 is beyond saving. 5ghz has a lot more potential than 2.4 ever did though.[/QUOTE]
2.4ghz is a nasty area, due to the fact its the ISM band. There is so so much shit going on in it, I am surprised WiFi started there tbh.
[QUOTE=Jsm;47888034]2.4ghz is a nasty area, due to the fact its the ISM band. There is so so much shit going on in it, I am surprised WiFi started there tbh.[/QUOTE]
Everything is getting bad really. At work we run most of our wireless p2p at 16ghz and it's nowhere near as strong as it used to be.
What happens if the Wi-Fi goes out? Or you have no Wi-Fi at all? I don't want to leech off my neighbor's Internet so I can recharge my phone.
[QUOTE=FunnyStarRunner;47888076]What happens if the Wi-Fi goes out? Or you have no Wi-Fi at all? I don't want to leech off my neighbor's Internet so I can recharge my phone.[/QUOTE]
Well odds are if it's something a reboot can't fix you'll need to replace it, so same thing you'd do with a broken charger. Buy a new one. That does bring up an interesting point though, how would wireless power be secured? If you're in range of the Wi-Fi you should be able to receive the power, no data being exchanged.
I wonder if they can improve this to the point we could possibly create massive Solar platforms in space that can possibly beam down energy for us to use on earth.
[QUOTE=Deathtrooper2;47888768]I wonder if they can improve this to the point we could possibly create massive Solar platforms in space that can possibly beam down energy for us to use on earth.[/QUOTE]
We already have the technology
[url]http://en.wikipedia.org/wiki/Space-based_solar_power#Microwave_power_transmission[/url]
[QUOTE=Deathtrooper2;47888768]I wonder if they can improve this to the point we could possibly create massive Solar platforms in space that can possibly beam down energy for us to use on earth.[/QUOTE]
Rise of the Reds mod for CnC Generals has EU-under-different-name faction using this for power plants.
[t]http://vignette2.wikia.nocookie.net/generalsrotr/images/e/ef/ECA_Solar_Reactor.png/revision/latest?cb=20130101153122[/t]
It looks neat and provides de facto infinite power when constructed, although in reality most energy would scatter in the atmosphere and the remaining bits would have to be harvested across large microwave collector farms. Maybe in the distant future, this technology would allow us to harvest energy close to the sun and send it to colonies on different planets in concentrated microwave beams. Maybe.
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