sci.physics.electromag

"Eric Gisse" wrote in message
news:00568aeb-e6ef-4040-a6a3-ac268610294c@s19g2000prg.googlegroups.com...
> On Mar 3, 6:05 am, "Bill Miller"
> wrote:
>> "Benj" wrote in message
>>
>> news:9a395157-13fb-475c-8249-28eb779a3abc@i7g2000prf.googlegroups.com...
>>
>> > On Mar 1, 12:26 pm, Uncle Al wrote:
>>
>> >>http://www.mazepath.com/uncleal/lilies.htm
>> >>http://www.mazepath.com/uncleal/field.htm
>>
>> > So I'm reading Unc's stories about "brain-sucking" NMR magnets and
>> > that brought to mind some previous musings of mine.
>>
>> > Most of you here are into physical sciences but if for some reason you
>> > would go to medical school, one of the classes you'd take would be
>> > physiology and one of the experiments you'd do would be to cut open
>> > some dogs and play with their hearts.
>>
>> > What you'd discover is that with voltages in the millivolt level a
>> > wire touched to the outside of a beating heart (depending on the
>> > electrical signal) can send it in to sudden arrhythmia (Known as
>> > fibrillation...so called because it was originally believed that each
>> > heart fiber was beating independently) or with a quick DC pulse send
>> > it back into normal rhythm. Remember I said millivolts!
>>
>> > Now as you probably know from TV when the heart goes into such
>> > arrhythmia emergency people use a device called a "defibrillator" It
>> > is essentially a huge capacitor with a couple paddle electrodes
>> > designed to send JOULES of energy through a patient's chest. Now the
>> > reason for all this voltage and energy is that the heart is more or
>> > less isolated from the rest of the body and is electrically isolated
>> > even more by being covered with the pericardium sack. So much energy
>> > and voltage is needed to defibrillate the heart that the machine often
>> > burns the patient's tissue.
>>
>> > Well, crap, I've thought from time to time, I've seen with my own eyes
>> > that all you need is MILLIVOLTS to do the job, so why in hell can't
>> > one simply use a pulsed magnetic field as a defibrillator? One
>> > additional piece of data came to me when I had an MRI scan. I thought,
>> > hey, there is a really nice intense field there pulsing away, that
>> > should surely induce some hum or noise in the nerves in my head or
>> > ears! If it did, that surely would be evidence that one could build
>> > an inductive defibrillator! Well, no soap. Lots of noise alright,
>> > but as Uncle Al notes it was from the vibrations of the heavy current
>> > coils and not my insensitive brain!
>>
>> > So how about it? Why won't a pulsed magnetic field induce nervous
>> > firings? Why won't a pulsed magnetic field make your hand twitch? I've
>> > heard that the Gummint has secret devices that can create voices in a
>> > persons head (probably lots of victims here on usenet!) but that they
>> > use microwaves rather than magnetic fields to do the job.
>>
>> > So why is it that one cannot build a magnetic defibrillator? Why won't
>> > pulsed magnetic fields that SHOULD be creating voltages high enough to
>> > do the job have any effect? What am I missing here?
>>
>> Hi Benj...
>>
>> Re-read Jefimenko. Then repeat after me:
>>
>> An electric field cannot cause a magnetic field.
>> and
>> A magnetic field cannot cause an electric field.
>>
>> Neat demonstration of the above, isn't it?
>
> The only thing being demonstrated is ignorance. Nothing Jefimenko says
> can undo basic observation.

OK... please prove your staement. In particular, I'd like to know:

1. What part of Jefimenko's "Causality" is in error, and how do you
demonstrate that?

2. What "basic observation" can you cite that proves that, for instance, an
E field CAUSES an H field?

Bill