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Comments on news posted 2006-11-15 08:57:31: The BBC (via Slashdot) explores how physicists believe the use of "resonance" may be able to recharge and power devices wirelessly. ..

page: 1 · 2 · 3
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ycool

join:2001-12-04
Miami, FL

1 edit
great idea

as long as it doesn't give me cancer or a brain tumor!!


Fluker

join:2005-04-07
West Lafayette, IN
Wireless extension cords?

Sounds like an oxymoron to me haha


karlmarx

join:2006-09-18
iraq
·Fairpoint Communic..

reply to ycool
Re: great idea

Of course it will give you cancer. Cancer is usually caused by an external agent (chemical, radiation, etc) acting on a healthy cell. This most definitely would cause cancer, as your body would be subject to radiation energy every time you turned on your PC.
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markofmayhem

join:2004-04-08
Pittsburgh, PA

True, but, will it have a better chance in giving you cancer than:

The sun
your dog
a hamburger
lightning strikes 100 miles away
watching TV
typing this post
riding a bicycle
walking through an area served by more than 1 cell phone provider
touching a paper clip


qdemn7
Smurf in My Loop
Premium
join:2003-09-16
Fort Worth, TX

Shades of Nikola Tesla

And his "broadcast power" aka "radiant energy". »www.twelvestar.com/Sourceworks/T···rgy.html
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ib50MbSoon
Formerly TwoKDialup
Premium
join:2002-06-07
Coloma, MI
Perpetual motion?

Would a resonating dildo recharge itself?


garagerock
Premium
join:2002-06-14
Louisville, KY
hilarious


nekote

join:2000-12-16
Hopkinton, MA

Transformer w/5m air gap? Tesla? EV1 Induction Paddle?

Tesla was big on wanting to transmit electrical power through the air.

This thing has 2 coils, separated by a maximum of 5m, according to the article / illustration.

In essence, a tranformer, so to speak?

A "long range" version of the Induction Paddle used to recharge the battery on the EV1 car from residential AC?

For any significant amount of power, electrical device has to "sit on" (be almost in contact with - minimal gap) the "charger coil"?
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RR Conductor
RailRoadDude
Premium
join:2002-04-02
Redwood Valley, CA
·Comcast

They stole the idea from Grandpa Munster!

He invented it on "The Munsters", Wireless Electricity that is


dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
A new take on this?

Charging Pad?

»www.newscientist.com/article.ns?id=dn6891


Maxo
Your tax dollars at work.
Premium,VIP
join:2002-11-04
Tallahassee, FL
clubs:

reply to qdemn7
Re: Shades of Nikola Tesla

said by qdemn7 See Profile :

And his "broadcast power" aka "radiant energy". »www.twelvestar.com/Sourceworks/T···rgy.html
That was the first thing I thought of. This should have been invented long ago.

RayW
Premium
join:2001-09-01
Layton, UT
clubs:
·XMission

This does work

Many years ago I had an instructor who told us of a fellow engineer who lived near a broadcast station. He designed and wrapped an antenna fence around his house, connected it to a rectifier network, and had a lot of power. Of course, it messed up the beam pattern of the station, but there was nothing they could do.

Don't think I want to live that close to that much RF power.

However, back to the story.

You also have to remember that for any general purpose system you are still bound by the inverse square law of a radiated signal. I also wonder how the physics works to give the apparent directional signal shown down at the bottom of the BBC article? In any event, you are looking at a fairly powerful signal in the 6.4 MHz area to give enough power to run a laptop. Wonder how that will affect the RF usage around that frequency since it will have the potential to interfere at a long distance (and another big notch in BPL to avoid data loss due to interference?)?

And I like the line
"There are a number of other aspects that need to be addressed to ensure efficient conversion of power to a form useful to input to devices."
It would be nice if there is an unknown aspect of resonance physics that would make this work. Very little power consumption by the transmitter until the user(s) is/are within range, then only as much power is sent out as is required by the device(s). Broadcast power from my Sci-Fi books a reality.
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bogey780

join:2004-03-19
Here
power loss

In Europe there's a push to abandon the Sleep function beauseof the power loss. I doubt this will take off there if it has any noticable loss.


Maxo
Your tax dollars at work.
Premium,VIP
join:2002-11-04
Tallahassee, FL
clubs:
reply to qdemn7
Re: Shades of Nikola Tesla

I wonder when the day will come that Tesla's inventions are old technology and not things to yet be employed.


SLD
Premium
join:2002-04-17
·Comcast

Wireless Power

I've thought for awhile that wireless power could be a reality if we had invisible lasers pointed from "sockets" in the house to mini solar panels on the devices. The only problem is that power would be cut if an object passed between the laser "socket" and the device - each device would need backup battery or clear line-of-sight.


Transmaster
Don't Blame Me I Voted For Bill and Opus

join:2001-06-20
Cheyenne, WY
·Qwest.net

reply to bogey780
Oh Hum

RF energy picked up by a resonate antenna rectified to a usable voltage and current buy a diode(s) and a voltage regulator big deal.

Of course we all know the real reason for such a system is 'nad control. This idea is being secretly backed by WAM (Women Against Men) just think of the evil which could be done with secret ED beams emanating from lap tops.

If this comes to pass I will be as rich as Bill Gates with my patented Morning Wood line aluminium boxer shorts.
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TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
·Sprint Mobile Broa..
·Comcast

reply to karlmarx
Re: great idea

said by karlmarx See Profile :

This most definitely would cause cancer, as your body would be subject to radiation energy every time you turned on your PC.
And this opinion is based on what? Your non-existent medical degree?
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karlmarx

join:2006-09-18
iraq
·Fairpoint Communic..

This 'opinion' is based on scientific FACTS.
»www.cancerhelp.org.uk/help/defau···age=8774

"Ionising radiation can change a cell’s DNA. If this happens, then that cell’s inbuilt instructions about how to live and grow are jumbled about. It is then possible for the cell to do something very different from what it's been programmed to do. For example, it may become cancerous and keep reproducing in an uncontrolled way. This could take years to happen but it still means that a cancer may eventually develop."
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Stick it to the MAN. Support your local torrent sites. Proudly providing 10mb of upstream for all your TV, Movie, and MP3 needs.


TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
·Sprint Mobile Broa..
·Comcast


1 edit
said by karlmarx See Profile :

This 'opinion' is based on scientific FACTS.
»www.cancerhelp.org.uk/help/defau···age=8774

"Ionising radiation can change a cell’s DNA. If this happens, then that cell’s inbuilt instructions about how to live and grow are jumbled about. It is then possible for the cell to do something very different from what it's been programmed to do. For example, it may become cancerous and keep reproducing in an uncontrolled way. This could take years to happen but it still means that a cancer may eventually develop."
Except the radiation in this device is non-ionizing radiation as discussed in the link you provided:
Non-ionising radiation

Non-ionising radiation has enough energy to move things around inside a cell but not enough to change cells chemically. The radiation from a microwave oven is non-ionising. Other examples include

* Ultraviolet rays from the sun or sunbeds
* Electromagnetic fields
* Radio waves
* Radiation waves given off from household electrical appliances, heaters, mobile phones with or without headsets and computers and their screens
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rf_engineer

join:2003-08-04
USA

reply to SLD
Re: Wireless Power

said by SLD See Profile :

I've thought for awhile that wireless power could be a reality if we had invisible lasers pointed from "sockets" in the house to mini solar panels on the devices. The only problem is that power would be cut if an object passed between the laser "socket" and the device - each device would need backup battery or clear line-of-sight.
There's another small problem. Any laser (visible or invisible) with sufficient energy to power a device would also have the power to burn flesh and blind people and animals.
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