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Anonymous Poster

Human Magnetometer

11/27/2007 2:25 PM

does anyone know of an inexpensive magnetometer to verify human body magnetic fields?

thanx

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#1

Re: Human Magnetometer

11/27/2007 5:45 PM

I don't think there is such a thing.

Any magnetic fields in the human body would be pretty feeble and thus need expensive euipment to see 'em MRI scanners are not cheap....and if body fields were strong we presumably wouldn't need such sophisticated MRI scanners.

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#4
In reply to #1

Re: Human Magnetometer

11/28/2007 3:15 AM

"...MRI scanners are not cheap" ... and not always available, to boot(!)

I'm sittin' 1000 miles from home right now, waiting for my turn in one of 2 units. Vacation - turned - hospital - visit - turned - orthopaedic surgery visit!

Jack-of-all-Trades is right ~ the original post was: "does anyone know of an inexpensive magnetometer to verify human body magnetic fields?"

Though the technology of MRI's (powerful magnets and radio waves) can align H atoms a certain way, and then sense and document those alignments, the question pertains to something that doesn't (necessarily) exist. What "human body magnetic fields" are we talking about...? The potential magnetic domains in submicroscopic elemental iron contained in hemoglobin, spinning/whorling/and pumping-about?

Or ... did somebody (else) swallow some nails, trying to get into the Guinness Book of Records?

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#6
In reply to #4

Re: Human Magnetometer

11/28/2007 6:53 AM

I know what you mean...

'You need and urgent scan...'

.

..

..

3 months later... a scan that takes 5 minutes..they say there is a lack of radigraphers. They could run equipment like that around the clock...I'd be happy to turn up at 2am rather than wait for 3 months!

(mucocelle in ethmoid sinus pushing my left eye out of alignment giving severe vertical diplopia ...(that's real bad double vison folks)...mind it helped my golf..I could see two holes and 2 balls...vastly increased to odds of sinking a putt )

Del

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#10
In reply to #6

Re: Human Magnetometer

11/28/2007 11:11 AM

...mind it helped my golf..I could see two holes and 2 balls...vastly increased to odds of sinking a putt

Puts me in mind of a sign in a bar: "When you arrived, this bar had just one front door. If you can see two, you've had enough to drink; please exit by the center one."

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#11
In reply to #6

Re: Human Magnetometer

11/28/2007 6:40 PM

If you are awaiting 2 months for a radiographic scan, then I believe you have answered a question I posted a while back about the pros and cons of the various medical systems around the globe.

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#14
In reply to #6

Re: Human Magnetometer

11/29/2007 12:17 AM

OK. I give up... What the hell is a mucocelle?

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#19
In reply to #14

Re: Human Magnetometer

11/29/2007 4:02 AM

A cyst full of mucus .

'Snot'..

'Oh yes it is'

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#21
In reply to #19

Re: Human Magnetometer

11/29/2007 11:47 PM

Well, how the heck did you get that?!

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#22
In reply to #21

Re: Human Magnetometer

11/30/2007 4:40 AM

Dunno..my head is just full of shite...I've had a series of sinus ops over the years also orbital cellulitis which was nasty.

One surgeon said to me ... the bone structure in your skull is very dense...there are two theories...

1. It is dense as a reaction to your susceptibility to infection.

2. You are susceptible to infection because of the dense structure and narrow passages.

He had a sense of humour .

Before one op I'd read about how swelling is actually an unhelpful response to injury in some cases (especially operations...) So before I went under I tried to relax and imagine little guys in white boilersuits hosing down the sinuses with cool water...

next time I saw the surgeon he had a look and said...'hmm that's good ..not much swelling' ! .

(For the next op I shall try to levitate )

Del

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#23
In reply to #22

Re: Human Magnetometer

12/01/2007 12:41 AM

Woof!!! Is this the sort of thing like the old scourge of childhood - a mastoid? Where the mastoid sinus (behind the ear) had to be removed because of infection?

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#24
In reply to #22

Re: Human Magnetometer

12/01/2007 12:52 AM

Check this...

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#25
In reply to #24

Re: Human Magnetometer

12/01/2007 3:26 AM

The problem is inherent in the design of the head!

To keep it light and mobile it has to be mostly air, hence the honeycomb of sinuses.

I'm not saying it's a bad design... maybe eyes on stalks like a snail would mean the brain and other organs could be mounted somewhere less vulnerable? Should we do a major re-design....?

At least I'm not a woodpecker...jeez imagine being a wood pecker with sinus trouble?

Without antibiotics I'd have been dead about 30 years ago.

After all, your body comes with a lifetime guarantee!

Del

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#26
In reply to #25

Re: Human Magnetometer

12/01/2007 10:08 AM

"After all, your body comes with a lifetime guarantee!"

That's good Del. I like it!

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#27
In reply to #25

Re: Human Magnetometer

12/10/2007 6:15 AM

<After all, your body comes with a lifetime guarantee!>

Hahahahahahaha!

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#29
In reply to #27

Re: Human Magnetometer

12/10/2007 7:05 AM

<After all, your body comes with a lifetime guarantee!>

Should that not read:-

After all, your body ONLY comes with a lifetime guarantee!

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#28
In reply to #21

Re: Human Magnetometer

12/10/2007 7:02 AM

...from his Cyster!!

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#18
In reply to #1

Re: Human Magnetometer

11/29/2007 1:50 AM

OK. I know this is off-topic, but not many of these Medical questions come along.

I just gotta ask - Does anyone else get the feeling like this guy is in real pain or has been really messed up since birth...

I know the artist was trying to capture DaVinci's sketch, but don't you think Caduceus would be much more appropriate?

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#31
In reply to #1

Re: Human Magnetometer

12/13/2007 9:44 AM

Any magnetic fields in the human body would be pretty feeble and thus need expensive equipment to see 'em MRI scanners are not cheap....and if body fields were strong we presumably wouldn't need such sophisticated MRI scanners.

I think I just found a reference to that feebleness with the approximate field strengths given, in a Scientific American essay. See: http://www.sciam.com/article.cfm?id=the-other-secret. And, was THIS (the book, The Secret) the reason that the question was asked?

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#32
In reply to #31

Re: Human Magnetometer

12/13/2007 12:16 PM

...hmmm... ("re")learn something new every day...! Yes indeed... Maxwell's Laws DO apply even at the infinitessimally-small currents (electrical/ionic) used within the human body to transmit pulses, nerve-to-nerve, etc.

See http://www.eurekalert.org/pub_releases/2007-11/nios-nnm102907.php ...link provided from GlobalSpec. "Astounding!"

We're getting there...

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#33
In reply to #31

Re: Human Magnetometer

12/13/2007 5:31 PM

"But as neuroscientist Russell A. Poldrack of the University of California, Los Angeles, explained to me, these fields are minuscule and can be measured only by using an extremely sensitive superconducting quantum interference device (SQUID) in a room heavily shielded against outside magnetic sources."

I have now perfected the SQUID and am considering a potential online retail price of only $2,000. PLZ send money today as quantities are very limited. You must not be very disappointed with this timely offer. Will post PO box # soon so that you will happily respond.

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#34
In reply to #33

Re: Human Magnetometer

12/14/2007 1:02 AM

I need one as soon as possible to find out whether I'm Polish... Yeah, it's the best I could come up with.

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#35
In reply to #34

Re: Human Magnetometer

12/14/2007 8:00 AM

You need a bit of a "polish" to make you shine on CR4!!

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#2

Re: Human Magnetometer

11/27/2007 10:23 PM

Measuring the body's generated magnetic field is not the problem. Trying to shield the instrument and the subject from the natural magnetic fields present in our environment (such as the earth, EM fields from current carrying conductors, EM radiation from any transmission source, etc) that are ORDERS of magnitude larger than the sample being measured, THAT is what will kill this little project.

Too much background noise, far too much.

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#5
In reply to #2

Re: Human Magnetometer

11/28/2007 6:49 AM

He will need to build some sort of Faraday's cage or similar I would think and the measuring instrument would have to be shielded so that it did not measure itself!!!!

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#3

Re: Human Magnetometer

11/28/2007 2:45 AM

Pat your head while rubbing your stomach. If you rub clockwise, then head is N and feet are S. If counter-clockwise, then you're the other way around.

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#7

Re: Human Magnetometer

11/28/2007 9:03 AM

A Squid Detector may ?

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#8
In reply to #7

Re: Human Magnetometer

11/28/2007 9:38 AM

What are you referring too?

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#12
In reply to #8

Re: Human Magnetometer

11/28/2007 8:20 PM

Andy, I believe he said a Squid Detector may detect a human magnetic field.

Does it also detect squid? Does a squid have a magnetic field?

Referring to Del's post #6: "I'd be happy to turn up at 2am rather than wait for 3 months!". There's one hospital here that offers a 25% discount on MRIs between 0100 and 0400. I know because my wife had one several years ago.

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#15
In reply to #12

Re: Human Magnetometer

11/29/2007 12:59 AM

Here, in some of the more metropolitan areas of the US, MRIs are the current medical fad. You see these buildings That have big signs that say, "Get Your MRI." I am totally serious.

The MRI is thought of as the magic looking lass that can expose anything that might be wrong with you. So, you get the MRI at less cost than the hospital - nothing has to be wrong with you, and no questions asked. Then, off to your doctor to have him take a look into your innards. Only problem is, if your doctor isn't quite as skilled as House, he might as well be looking at an X-Ray of a Volkswagen mini-bus.

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#9

Re: Human Magnetometer

11/28/2007 10:23 AM

Not inexpensive! What is required is a SQUID array http://en.wikipedia.org/wiki/SQUID (superconducting quantum interference detector) used in a magnetic-shielded room. Magnetic shielding is tricky and expensive and works great done properly. This is minimum needed for detection of human magnetic fields unless you are looking for foreign bodies or implants--and this is done simpler and easier with other imaging technologies.

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#13

Re: Human Magnetometer

11/28/2007 11:38 PM

What si inexpensive?

How much is it? no define.

Im instreseting in it.

imagine that a large enough solenoid and put manbody in it. move body rapidely, at termial has a tiny voltage, enlarge it, yoiu can get the magtetic value.

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#16
In reply to #13

Re: Human Magnetometer

11/29/2007 1:03 AM

No... I think that would fall under the category of homicide.

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#17
In reply to #16

Re: Human Magnetometer

11/29/2007 1:37 AM

Why?

you can move solenoid as well, instead of moving body. all the same.

but you have to knwo the micro amp amplifier will expensive.

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#20

Re: Human Magnetometer

11/29/2007 8:40 AM

Perhaps Kirlian photography with analysis of the distortions in the corona displayed? These distortions should be caused by magnetic fields. Or moisture, or temperature variants, or auras or .....

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#30

Re: Human Magnetometer

12/11/2007 12:31 AM

I suppose someone should ask why you think you have a magnet field? Are you currently stuck to the frig?

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