Wireless Energy Lights Bulb from Seven Feet Away »
Posted by: capn_caveman 1 year, 3 months agoIf you thought wireless Internet made life convenient, try wrapping your mind around wireless power. Researchers have successfully lit a 60-watt light bulb by transferring energy through the air from one specially designed copper coil to the bulb, which was attached to a second coil seven feet away.
Read Full Story at sciam.com
Join the Discussion 
+ Add Comment
Comments So Far: 63
-
-
-
100%
Moss_Ryder1 year, 3 months ago
Ya, i posted the same thing in the 'wireless power for laptops' article. same problem tho, how do you bill?
Reply
-
100%
CrazyRay1 year, 3 months ago
Why? In case you need a bulb lit in your home and there's no available plugs???
This has no practical applications...and Tesla already invented this over 100 years ago
Reply -
0%
GregD1 year, 3 months ago
It would most certainly be useful and convenient, but with all of the studies and conflicting information about our health and radio wave frequencies, one has to wonder what impact it would have on our health. The article briefly touches on this but doesn't get much more than that.
Reply
-
-
50%
TechnologyExpert1 year, 3 months ago
Yeah, but what happens to say, human bodies in the area? I realize they've never made a solid connection between EMF and cancer or whatever, but I can't believe tissue is totally unaffected by such radiation or EMF.
Reply-
75%
ameliog1 year, 3 months ago
That's what I was wondering. What about the stories of people living under power lines? I remember several years ago at an installation I commanded, one of the fellows that managed the facilities took me out to the power lines at the edge of the compound. He brought a fluorescent tube and held it above his head toward the power lines above, and the tube produced a faint flicker of light. I'd never seen this before and wouldn't have believed it was possible unless I'd witnessed it, but it made me wonder what the effects might be. Our bodies and brain waves are electrical circuits (layman's crude description) and what would wireless power do to us with long-term exposure?
Reply-
100%
somecommonsense1 year, 3 months ago
This wasn't a great idea when Tesla first thought of it over 100 years ago. But he was on to something. Sending electricity through the air is both dangerous and is not able to be metered effectively. I don't see what has changed here...we know it can be done in some form or another, this isn;t anything new, the reason it hasn't been done is becuase it's stupid, unecessary and dangerous.
n
http://www.unmuseum.org/tesla2.htm
Reply -
100%
tmac5031 year, 3 months ago
I have no idea as to the answer to your terminal question about long-term exposure to whatever the guys in the article used but in case you're curious about the trick with the fluorescent tube:
The current running through the power lines creates a spiraling magnetic field in the plane of which the powerline forms the normal. When these field lines pass through the circuit in the fluorescent tube a magnetic flux is created. Changes in the flux induce an EMF that produces the flickering you noticed.
It operates on the same principle as those flashlights that you see that power themselves up when you shake them.
Reply
-
-
-
24%
joeblowe1 year, 3 months ago
Does the name Nikola Tesla ring a bell with anyone? I'm not sure how sensible it is to use 5 pounds of copper to make coils that replace 5 oz. of copper wire. Wait -- yes I am. If you shrink the coils, you are going to shrink the field - which means less energy available unless it is run at a VERY high power. I don't think you would like what happens to Fido if he gets between the coils. You can pretty much do the same thing with a microwave oven and a florescent bulb.
Reply -
77%
hand-of-doom1 year, 3 months ago
thats right tesla knew this and made it public knowlege.
the people that control knowlege from univertsity's to grade schools are stealing the knowlege that was ment for evey one to obtain freely.
but the rich control it so they can control the bennifits of it.
they control the politics and laws.
take imagration laws, they want us to believe that we need more people to do jobs that other wont do, but why are we not allowed to shrink as a popululation, in order to exist without having to rely on corperations.
the people that came here came for a new start as land stewards.
technology is making us more dependent on it, not that thats all bad but too many people dont appreciate technology they abuse it.
Reply -
-
100%
inaroundabout1 year, 3 months ago
No. You can't amplify "power" so to speak, you can increase voltage or current but not both without putting in more energy.
Reply -
-
100%
MikeFromCanada1 year, 3 months ago
Adding voltage does not drop current, if you increase voltage you need less current to get the same wattage.
Watts = Volts X Amps
Ohm's law (V=IR) means that if X voltage is required to push X amps through X ohm's of resistance.
As for appliances only drawing the wattage they require, I'm not sure if that is entirely accurate; if i hook a 3volt flashlight bulb to a 12v battery, it will burn out very quickly. on the other hand, i have heard people say that if the line voltage coming into your home is too low, electronic equipment draws excessive current to make up the extra wattage and burn out much faster than they should.
Reply
-
-
-
0%
MikeFromCanada1 year, 3 months ago
It never ceases to amaze me how often researchers repackage old technology and present it as a break though.
The concept of a hybrid car has existed for almost as long as the car(oil was so cheap then that the extra cost didn't justify it).
I remember watching Bushes first state of the union address;
he explained the theory behind hydrogen power cells, and that he would allocate $2 billion(if i remember correctly) to research that technology, so that hopefully a child born today(which was about 7 years ago) will drive a vehicle powered by one of these devices. That technology has existed since the 1960's.
Reply -
86%
Xaos1 year, 3 months ago
Tesla's lab in New York City was lit by bulbs hung on the walls with no physical connection to power. Was quite disappointed that this article made no mention of Tesla's work. He was doing this same thing over a hundred years ago. One of his major interests was the wireless transmission of power, and his peers of the day thought he was a crackpot for pursuing it. Now they are doing something similar and considering breakthrough technology. Seems like Tesla still does not receive the respect and credit he deserves.
Reply -
0%
Truzseeker1 year, 3 months ago
Funny how some people are amazed by this new development.
Please see http://en.wikipedia.org/wiki/Nikola_Tesla
Nikola Tesla was already working on the transmission of energy without wires until JP Morgan stopped the funding because he wasn't going to make any money putting up wire and a meter to measure electrical use all for GREED !
This similar concept was invented about 100 years ago.
Reply -
0%
Bkumm1 year, 3 months ago
Well, once again the educated Netscape audience recognizes that this is something 'new' touted as impressive by a public that, in general, doesn't pay any attention.
Tesla did this a long time ago and everyone that mentioned that is to be applauded. Every wonder what happened to the notebooks of Tesla? Everyone else does, too. The story goes that they were seized by the FBI upon his death. Don't know if that's true, but that's what 'they' say.
Reply -
-
100%
Moss_Ryder1 year, 3 months ago
It was both. basically the air as lead and the ground as, you guessed it, ground. But you still needed a one-wire interface to the earth for it to work.
Reply
-
-
67%
xlegultx1 year, 3 months ago
I think all of Tesla's blueprints for things got capoofed, sounds like a conspiracy, anyways its relatively "new" since Tesla's weren't published much.
Reply -
-
100%
TCMYoda1 year, 3 months ago
Let's see: Check "Research and Writings of Nikola Tesla" which was publish while he was alive and reprinted a lot recently, "Patents of Nikola Tesla" and "Colorado Springs Notes" which were published after his death.
There are others from before and after but these cover the technical bases. His relatives grabbed alot of it before the feds got there and published it around Astria (or is it Hungary these days).
Danger in terms of electricity is relative to amperage and frequency levels. High frequencies and lower amperages are safer. Electricity is already in the air naturaly and artificially from a variety of sources but it isn't very organised. The key to sending electricity without direct connection is resonance in antennae or wire size and spacing. Interference is dealt with by adding more harmonic frequencies that use obstacles like additional antennas.
Reply -
100%
TCMYoda1 year, 3 months ago
Mr. Tesla had effective results several miles away. Of course his coils were often a flat spiral on a wooden rack with each wire maintained at a specific space from the next(about an inch in some picture). He also used a securely grounded conenction and a suspended round arial terminal.
The man's emphasis was increasing voltage (pressure) to increase range which in turn reduced amperage. Higher frequencies were seen as being conducted by the air at lower altitudes with higher air pressure. Vaccume tubes are need up to 60 Hz or so.
The metering problem can be solved by selling a countdown meter attached to an antenna and an outlet. It shuts off when it hits 0 and can be taken in to be reset for a fee. Call it prepaid Kilowatts.
Reply -
88%
anon_tx1 year, 3 months ago
The fact that this WORTHLESS, TRIVIAL factoid:
a) that an advanced high school physics or certainly a second semester college physics class student would know about (as well as the detrimental ramifications) even gets reported, OR
b) is received with so much inane and insipid dialogue (not all of it of course),
provides clear testament to what numerous studies say about the state of math and science education in this country. Study after study shows how woefully inadequate our high school students are and how far behind we are and it is getting worse... (NOTE: I did not say SCHOOLS - schools are trying valiantly but the situation is a SOCIETALLY created problem and cannot be fixed solely or even primarily by the education system - it starts with parents.)
Reply -
100%
WhatstheRush1 year, 3 months ago
anon--It appears that you missed a course or two in grammar and sentence construction. I guess you proved your point.
Reply -
Submitted By:
capn_caveman
I'm an engineer that loves 'anything' science. I'm interested in physics, astronomy, space exploration, Earth sciences, and mathematics to name just a few ...
Also submitted:
- 1.0 - Do nuclear decay rates depend on our distance from the sun?
- 1.0 - Unusual asteriod orbit sheds light on comets birth: researchers
- 1.0 - Mammoths moved 'out of America'
- 1.0 - Star Clusters and Usain Bolt
Related Articles:
Why not submit a story?
Also Propping This Article
Groups Watching This
No groups are watching this story. Why not share it with your group?
