Donate Bitcoin

Donate Paypal


PeakOil is You

PeakOil is You

Wireless electricity (MIT's successful experiment)

What's on your mind?
General interest discussions, not necessarily related to depletion.

Re: Wireless electricity (MIT's successful experiment)

Unread postby Valdemar » Fri 08 Jun 2007, 14:27:56

So it doesn't quite pass some standards, that is hardly indicative of a mass cancer causing agent out there which would already be visible from other EM sources used for years as it is. None of these devices emits enough radiation to damage DNA or, for that matter, any chemical bonds of note. They don't inflict severe thermal damage either, so quite literally, there is no known way they can cause damage.

I have yet to read a single paper or article on this subject that shows a mechanism for causing cellular damage. Until such a model is proposed, tested and venerated, such claims of danger are hopelessly overblown in a world that strives to be as harmless as cotton wool. Far more concern should be levelled at sunbathing doses or UV than what you'd get from a mobile or router. Now there is damage associated with such ionising radiation.
"Nothing survives. Not your parents. Not your children. Not even stars."
-Pinbacker, Sunshine
User avatar
Valdemar
Lignite
Lignite
 
Posts: 356
Joined: Wed 28 Mar 2007, 03:00:00
Location: Cambs., UK

Re: Wireless electricity (MIT's successful experiment)

Unread postby TheDude » Fri 08 Jun 2007, 14:34:51

What a stupid name - WiTricity. Why not ElecLess?

Nothing about powering cars this way. This is a liquid fuels crisis.

I bet we'll be able to Scan people now, rockin'!

Image
Cogito, ergo non satis bibivi
And let me tell you something: I dig your work.
User avatar
TheDude
Expert
Expert
 
Posts: 4896
Joined: Thu 06 Apr 2006, 03:00:00
Location: 3 miles NW of Champoeg, Republic of Cascadia

Re: Wireless electricity (MIT's successful experiment)

Unread postby Valdemar » Fri 08 Jun 2007, 14:39:07

I have to voice my view on dealing with the powering of cars then. We should go for nuclear, as in, we should all drive Ford Nucleons.
"Nothing survives. Not your parents. Not your children. Not even stars."
-Pinbacker, Sunshine
User avatar
Valdemar
Lignite
Lignite
 
Posts: 356
Joined: Wed 28 Mar 2007, 03:00:00
Location: Cambs., UK

Re: Wireless electricity (MIT's successful experiment)

Unread postby Terrapin » Fri 08 Jun 2007, 16:20:23

$this->bbcode_second_pass_quote('Valdemar', 'S')o it doesn't quite pass some standards, that is hardly indicative of a mass cancer causing agent out there which would already be visible from other EM sources used for years as it is. None of these devices emits enough radiation to damage DNA or, for that matter, any chemical bonds of note. They don't inflict severe thermal damage either, so quite literally, there is no known way they can cause damage.

I have yet to read a single paper or article on this subject that shows a mechanism for causing cellular damage. Until such a model is proposed, tested and venerated, such claims of danger are hopelessly overblown in a world that strives to be as harmless as cotton wool. Far more concern should be levelled at sunbathing doses or UV than what you'd get from a mobile or router. Now there is damage associated with such ionising radiation.


Cool your jets pal.

Although I would agree that Armageddon overstated his case (just as you have) he did so without inappropriately implying reading comprehension or other mental deficiencies in other posters here. A concern similar to Armageddon’s was expressed by both the inventers of the technology and the regulators of the technology. Your insults were inappropriate.
User avatar
Terrapin
Peat
Peat
 
Posts: 166
Joined: Wed 11 May 2005, 03:00:00
Location: NW California

Re: Wireless electricity (MIT's successful experiment)

Unread postby aflurry » Fri 08 Jun 2007, 16:59:57

double post.
Last edited by aflurry on Fri 08 Jun 2007, 17:08:15, edited 1 time in total.
User avatar
aflurry
Tar Sands
Tar Sands
 
Posts: 824
Joined: Mon 28 Mar 2005, 04:00:00

Re: Wireless electricity (MIT's successful experiment)

Unread postby aflurry » Fri 08 Jun 2007, 17:01:05

$this->bbcode_second_pass_quote('abelardlindsay', '
')This is truly the spirit of our age. Every new technological advance, especially in the field of energy, is greeted with ridicule and skepticism first and environmental paranoia second.


Well hold on. I accept that most of the claims may lack merit. But this attitude of skepticism is a direct result of disaster after disaster in the last hundred and fifty years of technological innovation. Chemical poisoning, radiation poisoning, pollution, carcinogens, etc. Haven't you ever seen those old duPont (or Dow or whoever it was) commercials with the kids playing in the spray from the DDT truck?

What, did you just forget about all of that? To lack skepticism at this point is frankly idiotic. Especially when you consider the profit incentive to bury any problems that is always present. People have sunk alot of money into these projects and they damn well want to get it back. And the public has been burned by that before... sometimes literally. I find it understandable that a little kookiness is the result. It is a fringe thing and doesn't deserve much press.

When someone has every interest to lie to you, why wouldn't you be skeptical? This applied to energy technologies, chemical, radiological, medical, and biological. Freaking double for biological because the stakes are so much higher.

This sounds like a great breakthrough and a very interesting phenomenon. I hope is is safe and practicable.
User avatar
aflurry
Tar Sands
Tar Sands
 
Posts: 824
Joined: Mon 28 Mar 2005, 04:00:00

Re: Wireless electricity (MIT's successful experiment)

Unread postby eric_b » Fri 08 Jun 2007, 17:20:27

$this->bbcode_second_pass_quote('abelardlindsay', '
')
BTW, this technology does not utilize em radiation that comes out of your cell phone, wi-fi or microwave but magnetic resonance energy transmission. There are no applications of this phenomenon that are currently in use. Few people understood this, even on Slashdot, where there are a lot of people with a science background. [smilie=BangHead.gif]



My understanding is they are using EM radiation to do this, they are just using the 'near-field' dynamics to do the transfer efficiently, not the far-field. What this means is the transmitting/receiving objects must be smaller than the wavelength in question and I believe they must not be separated my more than one wavelength (they may even need to be no further away than a quarter wavelength). Under these conditions a very efficient inductive transfer of energy can occur, and a useful amount can be transferred - many watts.

For example 100 kHz radio waves have a wavelength of a kilometer, but I believe these people are working with higher frequency radiation.

In a way all existing radios and radio antennas work on a similar principle - they are much smaller than the wavelength of radiation they are trying to intercept, and they cast a much larger 'shadow' than their size would indicate.

Tranferring power inductively is an old idea, one that Tesla worked. I can certainly see uses for it.

See this 'energy sucking antennas' link.. interesting:
http://amasci.com/tesla/tesceive.html

edit2: (from above link):

$this->bbcode_second_pass_quote('', '
')The "energy grabbing" effect is very limited. It's a nearfield effect. It could only operate within about a 1/6- or 1/4-wavelength radius around a coil or capacitor antenna, or in the region between the peaks of a propagating EM wave. In other words, when we add a tuned circuit, we can increase the "effective size" of a tiny antenna until it resembles a half-wave dipole antenna. It usually would be easier to simply build a half-wave dipole in the first place. Normally we would do so.


So it's a limited affect.. unless you are working with very low frequencies, but it would certainly be useful for transferring energy throughout a room or house and the limited nature of the phenomenon is a good thing.
User avatar
eric_b
Heavy Crude
Heavy Crude
 
Posts: 1174
Joined: Fri 14 Jan 2005, 04:00:00
Location: us

Re: Wireless electricity (MIT's successful experiment)

Unread postby steam_cannon » Fri 08 Jun 2007, 18:05:42

My superpower is I can make you feel god, with a magnet.

$this->bbcode_second_pass_quote('abelardlindsay', 'T')here are no applications of this phenomenon that are currently in use.
Maybe, maybe not... This reminds me of a very interesting and simple technology that clearly interacts with the human brain.

Amusingly, I was thinking of building a "Haunted House" using moderate strength resonant electromagnetic fields set up in rooms and near suggestive objects. Or making people wear cave helmets with a resonant magnet built in.

You see putting a magnetic coil over the brain, psychologists have demonstrated you can give people hallucinations determined by the persons beliefs (god, angels or aliens) and environment. The devices are easy to build, you practically only need a helmet and some wire for a portable device. Skeptics generally have a higher dopamine threshold and probably would require a higher setting, but it would work well with most people anyway.

Here are some articles that might be worth a read:

"magnetic fields were shown to induce feelings of God in many test subjects"
Experiments by Michael Persinger
http://www.religioustolerance.org/vis_brain.htm
http://en.wikipedia.org/wiki/Michael_Persinger
Image
There were also experiments in making people see angels and aliens...

Perhaps I could use this to make an alter to Cthulhu. Bow your head down to the alter and feel god...
Image

-----------------------------------------------------------------------------

Also electromagnetic hand held devices that generate pulsing electromagnetic fields are used in medicine for deep brain stimulation. (as a treatment for depression)

electromagnetic brain stimulation
http://www.spectrum.ieee.org/print/3050

transcranial magnetic stimulation
http://www.health.harvard.edu/newsweek/ ... update.htm

This next link is amusing, this reminds me of early advertisements saying "Radiation is good for you! Drink Radium Water!"
"MAGNETS MAY MAKE THE BRAIN GROW STRONGER!"
http://www.hotspotsz.com/Magnets_may_ma ... -clip-6693).html

-----------------------------------------------------------------------------

So to all you Luddites who don't know think electromagnetic fields can effect the brain, fluctuating magnetic fields can affect the brain very strongly. :P And it is very reasonable to worry that this technology may have terrible side effects. Imagine an office building where you "sense" you are surrounded by ghosts there to kill you! This could be very messed up. [smilie=angel4.gif] [smilie=confused5.gif] [smilie=evil4.gif]

-----------------------------------------------------------------------------

Also someone mentioned possible implication for Mitochondrial DNA, here's a study on that.

Impact of radio frequency electromagnetic radiation on DNA integrity in the male germline.
MEDLINE - 2005
"detailed analysis of DNA integrity using QPCR revealed statistically significant damage to both the mitochondrial genome (p < 0.05) and the nuclear beta-globin locus (p < 0.01). This study suggests that while RFEMR does not have a dramatic impact on male germ cell development, a significant genotoxic effect on epididymal spermatozoa is evident and deserves further investigation."
http://www.ncbi.nlm.nih.gov/sites/entre ... t=Abstract

Maybe this could be studied more, but their current results make me worry. So just to be careful boys, don't just put the tinfoil on your head! :lol:

Image
Last edited by steam_cannon on Fri 08 Jun 2007, 18:25:43, edited 1 time in total.
User avatar
steam_cannon
Expert
Expert
 
Posts: 2859
Joined: Thu 28 Dec 2006, 04:00:00
Location: MA
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby Armageddon » Fri 08 Jun 2007, 18:20:56

$this->bbcode_second_pass_quote('Valdemar', '')$this->bbcode_second_pass_quote('Armageddon', 'C')an you say cancer by the age of 20 ?


I can only assume your reading comprehension is somewhat lax, since anyone who actually understood the concept here would know how retarded that line is.

Which is to say, about as retarded as the people who think Wi-Fi routers and mobile phone masts give people cancer and kill off bumblebees.


Your probably one of those dickheads that smoke and say second hand is not harmful also.
User avatar
Armageddon
Light Sweet Crude
Light Sweet Crude
 
Posts: 7450
Joined: Wed 13 Apr 2005, 03:00:00
Location: St.Louis, Mo
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby abelardlindsay » Fri 08 Jun 2007, 18:43:53

THIS TECHNOLOGY DOES NOT USE ELECTROMAGNETIC RADIATION TO TRANSMIT ENERGY.

Why has this thread turned into an electromagnetic radiation debate?? It's like saying that oxygen is a poisonous gas because if it had one more electron it would be flourine.
User avatar
abelardlindsay
Lignite
Lignite
 
Posts: 392
Joined: Mon 28 Mar 2005, 04:00:00
Location: Northern California, USA

Re: Wireless electricity (MIT's successful experiment)

Unread postby Valdemar » Fri 08 Jun 2007, 18:46:30

$this->bbcode_second_pass_quote('Armageddon', '
')
Your probably one of those dickheads that smoke and say second hand is not harmful also.


Your amazing skill to jump to conclusions is unfounded, because I don't even drink, letalone smoke. As a biologist, I find the very idea of pumping poison into your body reprehensible and anyone who denies SHS is right up there with climate change deniers and those who would be classed as "cornucopians".

So no, I'm not one of those "dickheads", thanks.

$this->bbcode_second_pass_quote('abelardlindsay', '[')b]THIS TECHNOLOGY DOES NOT USE ELECTROMAGNETIC RADIATION TO TRANSMIT ENERGY.

Why has this thread turned into an electromagnetic radiation debate?? It's like saying that oxygen is a poisonous gas because if it had one more electron it would be flourine.


Because of the above poster's post I responded to about cancer and the claim that this technology would inflict such a disease on people. Then, when one points out how this is not the case, it spiralled out from there. The technology, even if it did use EM the same way as Wi-Fi or mobiles, wouldn't cause cancer. Ever. Otherwise sitting in front of my CRT now would be a bad thing.
"Nothing survives. Not your parents. Not your children. Not even stars."
-Pinbacker, Sunshine
User avatar
Valdemar
Lignite
Lignite
 
Posts: 356
Joined: Wed 28 Mar 2007, 03:00:00
Location: Cambs., UK
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby eric_b » Fri 08 Jun 2007, 18:51:28

$this->bbcode_second_pass_quote('abelardlindsay', '[')b]THIS TECHNOLOGY DOES NOT USE ELECTROMAGNETIC RADIATION TO TRANSMIT ENERGY.


BZZZZT! Wrong answer. See my earlier post. Yes they're using EM radiation, just in a way not commonly found. Any kind of wireless energy transfer is going to involve EM radiation.

$this->bbcode_second_pass_quote('abelardlindsay', '
')Why has this thread turned into an electromagnetic radiation debate?? It's like saying that oxygen is a poisonous gas because if it had one more electron it would be flourine.


It's PO, what do you expect? Some of the 'non-thermal' effects of EM radiation are hotly debated, that is they may have (hopefully) subtle
health affects.
User avatar
eric_b
Heavy Crude
Heavy Crude
 
Posts: 1174
Joined: Fri 14 Jan 2005, 04:00:00
Location: us
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby steam_cannon » Fri 08 Jun 2007, 18:52:05

$this->bbcode_second_pass_quote('abelardlindsay', '[')b]THIS TECHNOLOGY DOES NOT USE ELECTROMAGNETIC RADIATION TO TRANSMIT ENERGY.

Why has this thread turned into an electromagnetic radiation debate?? It's like saying that oxygen is a poisonous gas because if it had one more electron it would be flourine.
I was talking about pulsing magnets (very similar to this technology) that are purposely used for affecting the brain... But also I can understand why other people are talking about problems with related technology that involves electromagnetic energy.

If you want to have fun sometime, walk around an electrified building with an electromagnetic field sensor. Some electronics and wiring practically fill the room with their fluctuating magnetic field.
User avatar
steam_cannon
Expert
Expert
 
Posts: 2859
Joined: Thu 28 Dec 2006, 04:00:00
Location: MA
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby Valdemar » Fri 08 Jun 2007, 18:56:42

$this->bbcode_second_pass_quote('eric_b', '
')
It's PO, what do you expect? Some of the 'non-thermal' effects of EM radiation are hotly debated, that is they may have (hopefully) subtle
health affects.


Only if the power is far, far higher than any mobile device. The output and frequency of personal electronic gadgets is literally orders of magnitude below that to affect any chemical bonds, as some previously would think DNA was getting broken by the radiation. Now, with microwaves of a few milliwatts output, this won't happen. For UV of the ionising kind, you will get things like thymine dimers forming or other funky mutagenic effects in the genome. This is why I'd be more concerned by the big ball of fusing hydrogen in the sky 1 AU away, than the little battery powered phone next to my ear.
"Nothing survives. Not your parents. Not your children. Not even stars."
-Pinbacker, Sunshine
User avatar
Valdemar
Lignite
Lignite
 
Posts: 356
Joined: Wed 28 Mar 2007, 03:00:00
Location: Cambs., UK
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby eric_b » Fri 08 Jun 2007, 19:11:16

$this->bbcode_second_pass_quote('Valdemar', '')$this->bbcode_second_pass_quote('eric_b', '
')
It's PO, what do you expect? Some of the 'non-thermal' effects of EM radiation are hotly debated, that is they may have (hopefully) subtle
health affects.


Only if the power is far, far higher than any mobile device. The output and frequency of personal electronic gadgets is literally orders of magnitude below that to affect any chemical bonds, as some previously would think DNA was getting broken by the radiation. Now, with microwaves of a few milliwatts output, this won't happen. For UV of the ionising kind, you will get things like thymine dimers forming or other funky mutagenic effects in the genome. This is why I'd be more concerned by the big ball of fusing hydrogen in the sky 1 AU away, than the little battery powered phone next to my ear.


Right, right, I'm already familiar with the party line here. However I've read several studies online confirming DNA damage from weak microwave radiation that should not be able to do this. Apparently there are other damage mechanisms we're not really familiar with. I've also read evidence that weak microwave radiation can alter cell membranes (in the brain) and effect sleep among other things.

Here are a few links I just found googling. I've got some better ones buried somewhere but I don't feel like looking for them now
http://www.cancer-health.org/Brain_cancer.html
http://infoventures.com/emf/top/spectrum_Lai.html

I agree most of these things probably aren't worth worrying about, but it's something to keep in mind. Personally I hate cells phones and I don't have one - I'd rather not make a habit of holding even a weak microwave transmitter next to my noggin.
User avatar
eric_b
Heavy Crude
Heavy Crude
 
Posts: 1174
Joined: Fri 14 Jan 2005, 04:00:00
Location: us
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby Valdemar » Fri 08 Jun 2007, 19:17:33

The last link is well over a decade old. I don't think you can even use the first one since I can't even find a proper paper linked to it. The fact is, I can say that DNA won't be affected by these devices the same way I can say a magnifying glass focusing the sun on a car won't melt it. There's physically no way it can happen. Period. And that much is confirmed in the studies the WHO and FDA and HPA follow. Anything that suggest a minor risk is either an outlier or misinterpreted.

Now, I'm open the the idea of there being a third pathway, but since no one has even proposed a theoretical model as to how this damage can happen that is sound, it's really a no-brainer. Nothing will ever be 100% safe. I'm not about to give up all the electronics I need in this modern life over the possibility of a insignificant risk of cellular damage, not when eating most processed foods today brings more risk of health woes.

Course, when TSHTF, we'll have bigger problems on our plates. :P
"Nothing survives. Not your parents. Not your children. Not even stars."
-Pinbacker, Sunshine
User avatar
Valdemar
Lignite
Lignite
 
Posts: 356
Joined: Wed 28 Mar 2007, 03:00:00
Location: Cambs., UK

Re: Wireless electricity (MIT's successful experiment)

Unread postby eric_b » Fri 08 Jun 2007, 19:23:03

$this->bbcode_second_pass_quote('Valdemar', '
')
Course, when TSHTF, we'll have bigger problems on our plates. :P


No doubt.

I do have some other links I'll try to find later. Point is there are other subtle damage mechanisms, like altering cell membrane permeability and changing the blood-brain barrier.

I agree if there were any significant problems we'd know about it by now as people would be dropping like flies, and clearly that isn't the case.
User avatar
eric_b
Heavy Crude
Heavy Crude
 
Posts: 1174
Joined: Fri 14 Jan 2005, 04:00:00
Location: us
Top

Re: Wireless electricity (MIT's successful experiment)

Unread postby Valdemar » Fri 08 Jun 2007, 19:36:13

I've heard about the membrane alteration idea, but never seen anything concrete on it being a reason for concern. I'll certainly pay more attention to anything that looks into it in future though. It would at least shed some new light on chromo-electrodynamics and cell interactions. Nothing to be worried about, at least.
"Nothing survives. Not your parents. Not your children. Not even stars."
-Pinbacker, Sunshine
User avatar
Valdemar
Lignite
Lignite
 
Posts: 356
Joined: Wed 28 Mar 2007, 03:00:00
Location: Cambs., UK

Re: Wireless electricity (MIT's successful experiment)

Unread postby kochevnik » Fri 08 Jun 2007, 20:13:29

I think people are leary because they are tired of getting screwed by yet one more 'techological micracle' that ends up causing more problems than it solves.

We pay a steep price for a lot of these technologies - one that most people completely and totally ignore - even tho the evidence is staring them right in the face.

50,000 people die each year in the US from auto accidents - yet people just blow it off. Figure tens of millions have either died or never been born as a result.

500,000 people die of cancer every year too. Maybe EM has some responsibility for that or maybe not - consider that everyone who does these 'scientific' studies now has a vested interest in their outcome either way - so for now, I'll err on the side of caution.

In any case Tesla did this a century ago and he did it a lot more effectively. Anyone note that one such energy experiment coincided with the Tuingska 'meteor' event ? One theory is that Tesla's experiment was the direct cause for the energy release on the other side of the planet. Stranger things have happened.
"People are just bastards - bastard covered bastards with bastard filling."
kochevnik
Lignite
Lignite
 
Posts: 328
Joined: Fri 20 Aug 2004, 03:00:00

Re: Wireless electricity (MIT's successful experiment)

Unread postby Terrapin » Fri 08 Jun 2007, 20:27:37

$this->bbcode_second_pass_quote('kochevnik', 'I')n any case Tesla did this a century ago and he did it a lot more effectively. Anyone note that one such energy experiment coincided with the Tuingska 'meteor' event ? One theory is that Tesla's experiment was the direct cause for the energy release on the other side of the planet. Stranger things have happened.


Tesla did do it a century ago but not more efficiently.

The first line of the Science paper is:

$this->bbcode_second_pass_quote('', 'I')n the early 20th century, before the electrical-wire grid,
Nikola Tesla (1) devoted much effort towards schemes to
transport power wirelessly. However, typical embodiments
(e.g. Tesla coils) involved undesirably large electric fields.




References and Notes
1. N. Tesla, U.S. patent 1,119,732 (1914).


Sorry, I can't link to the paper. Here's the abstract
User avatar
Terrapin
Peat
Peat
 
Posts: 166
Joined: Wed 11 May 2005, 03:00:00
Location: NW California
Top

PreviousNext

Return to Open Topic Discussion

Who is online

Users browsing this forum: No registered users and 2 guests

cron