Magnet Myths and Misconceptions

[tinman]

Really?  Do you think you have an example of a net charge flux versus time without a magnetic field surrounding that charge flux?

Not sure about your chinese there Mark???

[MarkE]

I never said a wire,i said a conductor. You do know there are other materials that can conduct/carry current other than wire-dont you.
This is totally incorrect,and i know this for fact. This is the difference between those that read books,and those that actually test this very situation with actual devices. Here is a result of this very situation between iron wire and copper wire. Two identical air core coils wound,one with soft iron tie wire(plastic coated),and one with copper wire. Both wires have exact same OD,and same number of turns. Now which do you suppose created the strongest magnetic field when supplied with the same amount of power?-and im talking180%+ stronger.

You are right about that and MH was mistaken.

Might i remind you that this lousy truck driver had to correct you on your thinking that 1 coil would have more pull force for the same amount of P/in than two coils(one each side of the magnet)would. This was a no brainer,and you got it wrong.
Even the best slip up some times MH,so give the less experianced a little breathing room.

Facts always rule the day.

This is where bench time come into play MH.
Dont discredit those that could one day teach you something.

[picowatt]

Some times MH, the answer was apparent way back in the past, but at the time it ment nothing to you other than a problem fixed.
I will explain tomorrow night when I get  back home  to a keyboard I can see.
But for now, are you sure there is no conductor that current can travel through without a magnetic field being created around it-this is a question for you to Mark.

Tinman,

I, for one, am still waiting for the your explanation...

PW

[MarkE]

Not sure about your chinese there Mark???

The thread as I have followed it:

TINMAN:      Mark-What if there was a conductor that can carry current, but no magnetic field is produced around that conductor

NOBULL:      If that would happen around a single conductor then it would be a revolution in physics.

TINMAN:      No,the physics already explains how it can be done through chemistry.

We dont have an energy crisis-we have a scientific crisis.

MARKE:      Really?  Do you think you have an example of a net charge flux versus time without a magnetic field surrounding that charge flux?

TINMAN:      Not sure about your chinese there Mark???

If the relationship of charge to space and time is changing there is a magnetic field.  In simpler terms:  If charge is moving there is a magnetic field.  In even simpler terms:  If there is an apparent electric current, there is a magnetic field.  NOBULL's comment about the single conductor is tantamount to saying the same thing.  When one has a coaxial cable where the center conductor passes current in one direction and the outer condutor passes the return current in the other, then the net current penetrating any surface exterior to the cable is zero and the net magnetic field exterior to the coaxial cable is zero.  If we made a "salt water coax" consisting of an inner PVC pipe filled with salt water, and an outer pipe of any kind filled with salt water then we would have a coaxial cable emulation.  If we drained the outer pipe then we would see the magnetic field associated with any current passed through the water of the inner pipe no matter what the outer pipe is made of.  If the outer pipe were a very thick iron pipe then the magnetic leakage from the field surrounding the salt water in the inner pipe would be small.

[tinman]

Tinman,

I, for one, am still waiting for the your explanation...

PW

PW&Mark

I would like you to think about how electric current is carried through an ionic conductor of different solutions. Lets switch to real current flow(electron flow) here,and leave conventional current flow out of it. We refer to wikipedia here(and if this isnt an accurate description ,then now is the time to say something) Quote: An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma.

An electric current is carried by electron's,and the electron flow is from negative to positive.Useing say a copper wire ,this flow of current produces a magnetic field around that wire.
Now if we use ion's to carry that current by way of an ionic conductor,the ion flow is opposite to that of the electron flow,and although the polarity is the same through the ionic conductor,the opposite flow of ions creates a magnetic field around that conductor that is opposite to that of the one created by electron flow. The down side is that because of the higher resistance of the ionic conductor,a higher power level must be used to obtain a decent amount of current through that conductor.

If we make a K/CL mix of the right ratio,we can ballance that flow of current between the ion carriers and electron carriers. Once this ballance is correct,then the net magnetic field around the conductor is 0.

Another problem associated with this when useing a DC current is of course electrolysis. But this problem is omited when useing AC current.