| Topic: |
Science > Physics |
| User: |
"Sam Wormley" |
| Date: |
07 Jun 2007 11:27:39 PM |
| Object: |
Wireless power a reality? |
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
The mess of electrical cables that recharge our laptops, mobile phones
and PDAs could soon disappear altogether -- at least according to a team
of US physicists, who have shown how power can be transmitted without
wires using special "resonant" antennas. The researchers used the system
to power a 60-W light bulb placed two metres from a wireless
transmitter, and say that it could be scaled down for use in portable
devices without a loss of efficiency (Science Express doi:
10.1126/science.1143254).
.
|
|
| User: "CWatters" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 02:51:31 PM |
|
|
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
Just what the planet doesn't need right now...
"...the MIT team claim, fully lit the bulb with a transmission efficiency of
40%"
So that 60W light bulb draws 150W from the mains! Great! Way to Go MIT. :-(
.
|
|
|
| User: "Bert Hickman" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 08:16:03 PM |
|
|
CWatters wrote:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
Just what the planet doesn't need right now...
"...the MIT team claim, fully lit the bulb with a transmission efficiency of
40%"
So that 60W light bulb draws 150W from the mains! Great! Way to Go MIT. :-(
Their paper indicates that the wall plug power to drive the transmitter
was 400 watts, so overall efficiency was about 15% ...
Bert
--
***************************************************
We specialize in UNIQUE items! Coins shrunk by huge
magnetic fields, Lichtenberg Figures (our "Captured
Lightning") and out of print technical Books. Visit
Stoneridge Engineering at http://www.teslamania.com
***************************************************
.
|
|
|
| User: "CWatters" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 11:38:20 AM |
|
|
"Bert Hickman" <bert_hickman@comcast.net> wrote in message
news:hbGdnXaq44_1YvTbnZ2dnUVZ_rDinZ2d@comcast.com...
CWatters wrote:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
Just what the planet doesn't need right now...
"...the MIT team claim, fully lit the bulb with a transmission
efficiency of
40%"
So that 60W light bulb draws 150W from the mains! Great! Way to Go MIT.
:-(
Their paper indicates that the wall plug power to drive the transmitter
was 400 watts, so overall efficiency was about 15% ...
Arrghh worse than I thought.
.
|
|
|
|
| User: "" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 12:05:02 PM |
|
|
Bert Hickman <bert_hickman@comcast.net> wrote:
CWatters wrote:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
Just what the planet doesn't need right now...
"...the MIT team claim, fully lit the bulb with a transmission efficiency of
40%"
So that 60W light bulb draws 150W from the mains! Great! Way to Go MIT. :-(
Their paper indicates that the wall plug power to drive the transmitter
was 400 watts, so overall efficiency was about 15% ...
Which means the transmitter itself was 37.5% efficient, or ***** poor.
What were they using, tubes?
--
Jim Pennino
Remove .spam.sux to reply.
.
|
|
|
| User: "chumley" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 02:56:43 PM |
|
|
<jimp@specsol.spam.sux.com> wrote in message
news:953rj4-alp.ln1@mail.specsol.com...
Bert Hickman <bert_hickman@comcast.net> wrote:
CWatters wrote:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
Just what the planet doesn't need right now...
"...the MIT team claim, fully lit the bulb with a transmission
efficiency of
40%"
So that 60W light bulb draws 150W from the mains! Great! Way to Go MIT.
:-(
Their paper indicates that the wall plug power to drive the transmitter
was 400 watts, so overall efficiency was about 15% ...
Which means the transmitter itself was 37.5% efficient, or ***** poor.
What were they using, tubes?
Wrong, it is the coupling loss between the coils 40% is not bad at 7 feet,
but means some odd 50% of the power is being radiated all over the place,
with lots of harmonics if the transmitter is 90% efficient.
.
|
|
|
| User: "" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 05:25:03 PM |
|
|
chumley <nospam@nospam.com> wrote:
<jimp@specsol.spam.sux.com> wrote in message
news:953rj4-alp.ln1@mail.specsol.com...
Bert Hickman <bert_hickman@comcast.net> wrote:
CWatters wrote:
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
Just what the planet doesn't need right now...
"...the MIT team claim, fully lit the bulb with a transmission
efficiency of
40%"
So that 60W light bulb draws 150W from the mains! Great! Way to Go MIT.
:-(
Their paper indicates that the wall plug power to drive the transmitter
was 400 watts, so overall efficiency was about 15% ...
Which means the transmitter itself was 37.5% efficient, or ***** poor.
What were they using, tubes?
Wrong, it is the coupling loss between the coils 40% is not bad at 7 feet,
but means some odd 50% of the power is being radiated all over the place,
with lots of harmonics if the transmitter is 90% efficient.
Let's see, transmission power efficiency 40% to provide 60 watts
means 150 watts was transmitted.
Wall power of 400 watts and 150 watts transmitted is 37.5% for the
transmitter alone.
Where's the beef?
--
Jim Pennino
Remove .spam.sux to reply.
.
|
|
|
|
|
| User: "tj Frazir" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 08:25:01 PM |
|
|
140 % *****.
superconductors with little resistance is 2400 watt at 2 yards to get
60.
The emf field is square distance .
So is a light bulb weeker at distance.
These jackasses ignore the distance and have a 40 % coil at 2 yards.
.
|
|
|
| User: "" |
|
| Title: Re: Wireless power a reality? |
11 Jun 2007 05:49:25 AM |
|
|
On Jun 10, 1:25 pm, (tj Frazir) wrote:
140 % *****.
superconductors with little resistance is 2400 watt at 2 yards to get
60.
The emf field is square distance .
So is a light bulb weeker at distance.
These jackasses ignore the distance and have a 40 % coil at 2 yards.
Go easy on them. They are Physicists, not engineers.
.
|
|
|
|
|
|
| User: "tj Frazir" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 09:56:06 AM |
|
|
They still lies at 400 watt.
transformers 2 yards apart with superconductors will still be 2400 watt
to get 60.
Place two magnets 2 yards apart and see .
Or use a superconducting coil 2 yards away from the magnet.
Thats what they are doing and thier claims are *****
.
|
|
|
| User: "Phineas T Puddleduck" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 10:07:50 AM |
|
|
In article <19465-466ABF86-1100@storefull-3213.bay.webtv.net>,
(tj Frazir) wrote:
Thats what they are doing and thier claims are *****
And if anyone would know *****, it would be you TJ.
--
COOSN-174-07-82116: Official Science Team mascot and alt.astronomy's favourite
poster (from a survey taken of the saucerhead high command).
Official maintainer of the supra-cosmic space fluid pump (Mon and Tues only).
.
|
|
|
|
|
|
|
| User: "chumley" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 12:05:00 PM |
|
|
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
The mess of electrical cables that recharge our laptops, mobile phones
and PDAs could soon disappear altogether -- at least according to a
team
of US physicists, who have shown how power can be transmitted without
wires using special "resonant" antennas. The researchers used the
system
to power a 60-W light bulb placed two metres from a wireless
transmitter, and say that it could be scaled down for use in portable
devices without a loss of efficiency (Science Express doi:
10.1126/science.1143254).
more pix here at BBC;
this is nothing new at all, one can calculate the frequency by the size of
the loops and number of turns.
Popular Mechanics had this stuff in it back in the 1940's
Induction is nothing new, Induction furnaces........
another MIT Dorkasorus, NASA quality material.
Hope he is on the first Mars flight.
BBC link
http://news.bbc.co.uk/2/hi/technology/6725955.stm
.
|
|
|
|
| User: "chumley" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 08:34:55 AM |
|
|
"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:%U4ai.92364$n_.10691@attbi_s21...
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
The mess of electrical cables that recharge our laptops, mobile phones
and PDAs could soon disappear altogether -- at least according to a
team
of US physicists, who have shown how power can be transmitted without
wires using special "resonant" antennas. The researchers used the
system
to power a 60-W light bulb placed two metres from a wireless
transmitter, and say that it could be scaled down for use in portable
devices without a loss of efficiency (Science Express doi:
10.1126/science.1143254).
my toothbrush already does this.
MIT is about 90 years too late.
.
|
|
|
| User: "Richard Tobin" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 09:13:12 AM |
|
|
In article <46695af0$0$97267$892e7fe2@authen.yellow.readfreenews.net>,
chumley <nospam@nospam.com> wrote:
my toothbrush already does this.
MIT is about 90 years too late.
Does it do it from two metres? Does it do it without any part of the
power source projecting inside the toothbrush body?
-- Richard
--
"Consideration shall be given to the need for as many as 32 characters
in some alphabets" - X3.4, 1963.
.
|
|
|
| User: "chumley" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 12:19:16 PM |
|
|
"Richard Tobin" <richard@cogsci.ed.ac.uk> wrote in message
news:f4bo5o$mum$1@pc-news.cogsci.ed.ac.uk...
In article <46695af0$0$97267$892e7fe2@authen.yellow.readfreenews.net>,
chumley <nospam@nospam.com> wrote:
my toothbrush already does this.
MIT is about 90 years too late.
Does it do it from two metres? Does it do it without any part of the
power source projecting inside the toothbrush body?
-- Richard
about 1/2 inch power is radiated from a coil and picked up by a resonate
coil in the tooth brush and the battery is charged up, stays charged.
The MIT stunt is very old technology, nothing new at all.
2 meters is just the radiating power turned up. They have nothing directing
the EM field either.
This is 1910 technology at best.
BBC has more photos
http://news.bbc.co.uk/2/hi/technology/6725955.stm
.
|
|
|
|
|
|
| User: "Jan Panteltje" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 07:26:50 AM |
|
|
On a sunny day (Fri, 08 Jun 2007 04:27:39 GMT) it happened Sam Wormley
<swormley1@mchsi.com> wrote in <%U4ai.92364$n_.10691@attbi_s21>:
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
The mess of electrical cables that recharge our laptops, mobile phones
and PDAs could soon disappear altogether -- at least according to a team
of US physicists, who have shown how power can be transmitted without
wires using special "resonant" antennas. The researchers used the system
to power a 60-W light bulb placed two metres from a wireless
transmitter, and say that it could be scaled down for use in portable
devices without a loss of efficiency (Science Express doi:
10.1126/science.1143254).
Dear Sam it is make belief.
Even if it was made small and practical, then it would fry any person or object
in the vincinity.
It also is not allowed here in Europe anyways because of this:
http://www.conformity.com/0631/ (but politics, see page 9, that document is nonsense anyways,
see very long thread in sci.electronics.design.)
I am sure US has similar restrictions.
It is Yet An Other Illusion just so people think MIT does actually something useful
.....
Hell US cannot even do a moonlanding without 20 years saving and reseach.....
Forget about a 60W lightbulb ;-)
.
|
|
|
|
| User: "Uncle Al" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 09:13:19 AM |
|
|
Sam Wormley wrote:
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
The mess of electrical cables that recharge our laptops, mobile phones
and PDAs could soon disappear altogether -- at least according to a team
of US physicists, who have shown how power can be transmitted without
wires using special "resonant" antennas. The researchers used the system
to power a 60-W light bulb placed two metres from a wireless
transmitter, and say that it could be scaled down for use in portable
devices without a loss of efficiency (Science Express doi:
10.1126/science.1143254).
That "mess of cables" constitutes modestly secure data transport (in
law if not in physics). Anything that goes through the air - unless
**deeply** encrypted on the fly - is subject to real time government
interdiction. One example is cell phones. Lawyers doing important
business only use land lines - not for untappability, but for
consttutional (HA!) protection.
http://www.mazepath.com/uncleal/ homesec.jpg
If my neighbor installed wireless power transmission I would of
necessity install a massive absorber lest I be subject to UNKNOWN
HAZARDS! As long as the energy is being absorbed anyway...
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2
.
|
|
|
|
| User: "Benj" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 01:59:15 AM |
|
|
Sam Wormley wrote:
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
The mess of electrical cables that recharge our laptops, mobile phones
and PDAs could soon disappear altogether -- at least according to a team
of US physicists, who have shown how power can be transmitted without
wires using special "resonant" antennas. The researchers used the system
to power a 60-W light bulb placed two metres from a wireless
transmitter, and say that it could be scaled down for use in portable
devices without a loss of efficiency (Science Express doi:
10.1126/science.1143254).
Gosh, just 120 years after Tesla (who holds the patents) MIT
physicists discover magnetic induction and the tuned tank circuit.
Guess that's what keeps that place number one!
.
|
|
|
| User: "" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 10:45:02 AM |
|
|
Benj <bjacoby@iwaynet.net> wrote:
Sam Wormley wrote:
Wireless power a reality (Jun 7)
http://physicsweb.org/article/news/11/6/5
The mess of electrical cables that recharge our laptops, mobile phones
and PDAs could soon disappear altogether -- at least according to a team
of US physicists, who have shown how power can be transmitted without
wires using special "resonant" antennas. The researchers used the system
to power a 60-W light bulb placed two metres from a wireless
transmitter, and say that it could be scaled down for use in portable
devices without a loss of efficiency (Science Express doi:
10.1126/science.1143254).
Gosh, just 120 years after Tesla (who holds the patents) MIT
physicists discover magnetic induction and the tuned tank circuit.
Guess that's what keeps that place number one!
The next thing they need to discover is the FCC regs on intentional
radiators.
--
Jim Pennino
Remove .spam.sux to reply.
.
|
|
|
|
| User: "Richard Tobin" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 10:48:33 AM |
|
|
In article <1181285955.279799.233450@n4g2000hsb.googlegroups.com>,
Benj <bjacoby@iwaynet.net> wrote:
Gosh, just 120 years after Tesla (who holds the patents)
Any patents Tesla had have long expired. And if Tesla patented it,
how come no-one has been selling it?
And what about the philosopher's stone, the elixir of life, and
the trisection of the angle? Didn't Tesla discover those too?
-- Richard
--
"Consideration shall be given to the need for as many as 32 characters
in some alphabets" - X3.4, 1963.
.
|
|
|
| User: "tj Frazir" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 04:42:53 PM |
|
|
No power loss is a big fat lie.
It takes 6000 watt to light the 60 watt bulb.
.
|
|
|
|
| User: "" |
|
| Title: Re: Wireless power a reality? |
08 Jun 2007 11:25:03 AM |
|
|
Richard Tobin <richard@cogsci.ed.ac.uk> wrote:
In article <1181285955.279799.233450@n4g2000hsb.googlegroups.com>,
Benj <bjacoby@iwaynet.net> wrote:
Gosh, just 120 years after Tesla (who holds the patents)
Any patents Tesla had have long expired. And if Tesla patented it,
how come no-one has been selling it?
Because it was a dumb idea when Tesla came up with it and it is still
a dumb idea, or perhaps even dumber now that RFI is a concideration?
--
Jim Pennino
Remove .spam.sux to reply.
.
|
|
|
|
| User: "Benj" |
|
| Title: Re: Wireless power a reality? |
09 Jun 2007 03:18:34 AM |
|
|
Richard Tobin wrote:
In article <1181285955.279799.233450@n4g2000hsb.googlegroups.com>,
Benj <bjacoby@iwaynet.net> wrote:
Gosh, just 120 years after Tesla (who holds the patents)
Any patents Tesla had have long expired. And if Tesla patented it,
how come no-one has been selling it?
Actually, since you wish to simply make fun of Tesla (to presumably
show how much smarter you are than he) you should know that MANY of
Tesla's patents have been exploited. Duh. And interesting enough
(since you bring the subject up) that includes the basic Tesla coil
which is the basis of his induction and power transmission schemes.
Tesla , however granted free license to these patents when used for
"medical" purposes. Huge numbers of these devices were sold. And
someone in Sci.electronics.design pointed out an old Popular
Electronics article about how to build a "wireless" powered radio. It
tunes a strong station to power the receiver that you use to pick up
the weak station. Tesla also patented that idea. So Richard, just
how many patents do you hold? How many of those formed the basis of
technology for the next century? OK, so much of the wireless power
stuff proved a bit impractical, but that clearly didn't stop the
geniuses at MIT.
And what about the philosopher's stone, the elixir of life, and
the trisection of the angle? Didn't Tesla discover those too?
No, he didn't but since you are clearly "smarter" than Tesla I presume
you have "discovered" them all.
.
|
|
|
| User: "" |
|
| Title: Re: Wireless power a reality? |
11 Jun 2007 05:47:22 AM |
|
|
On Jun 9, 8:18 pm, Benj <bjac...@iwaynet.net> wrote:
Richard Tobin wrote:
In article <1181285955.279799.233...@n4g2000hsb.googlegroups.com>,
Benj <bjac...@iwaynet.net> wrote:
Gosh, just 120 years after Tesla (who holds the patents)
Any patents Tesla had have long expired. And if Tesla patented it,
how come no-one has been selling it?
Actually, since you wish to simply make fun of Tesla (to presumably
show how much smarter you are than he) you should know that MANY of
Tesla's patents have been exploited. Duh. And interesting enough
(since you bring the subject up) that includes the basic Tesla coil
which is the basis of his induction and power transmission schemes.
Tesla , however granted free license to these patents when used for
"medical" purposes. Huge numbers of these devices were sold. And
someone in Sci.electronics.design pointed out an old Popular
Electronics article about how to build a "wireless" powered radio. It
tunes a strong station to power the receiver that you use to pick up
the weak station. Tesla also patented that idea. So Richard, just
how many patents do you hold? How many of those formed the basis of
technology for the next century? OK, so much of the wireless power
stuff proved a bit impractical, but that clearly didn't stop the
geniuses at MIT.
And what about the philosopher's stone, the elixir of life, and
the trisection of the angle? Didn't Tesla discover those too?
No, he didn't but since you are clearly "smarter" than Tesla I presume
you have "discovered" them all.
Don't forget ac power transmission,three phase and the induction/
three phase motor. Probably the most widely used of Teslas work.
.
|
|
|
|
|
|
|
|
Related Articles |
|
|
