GOLD MAGNET ?????

[JC1]

WoW

Excellent !!!

This is a quote, and a good read.

While metal detectors can easily distinguish between ferromagnetic metals such as steel and non-ferromagnetic metals such as aluminum, gold, silver, and copper, it is difficult for them to distinguish between the particular members of those two classes. Ferromagnetic metals are ones that have intrinsic magnetic structure and respond very strongly to outside magnetic fields. The non-ferromagnetic metals have no intrinsic magnetic structure but can be made magnetic when electric currents are driven through them.

Good metal detectors produce electromagnetic fields that cause currents to flow through nearby metal objects and then detect the magnetism that results. Unfortunately, identifying what type of non-ferromagnetic metal is responding to a metal detector is hard. Mark Rowan, Chief Engineer at White's Electronics of Sweet Home, Oregon, a manufacturer of consumer metal detecting equipment, notes that their detectors are able to classify non-ferromagnetic metal objects based on the ratio of an object's inductance to its resistivity. They can reliably distinguish between all denominations of U.S. coins--for example, nickels are relatively more resistive than copper and clad coins, and quarters are more inductive than smaller dimes. The primary mechanism they use in these measurements is to look at the phase shift between transmitted and received signals (signals typically at, or slightly above, audio frequencies). However, they are unable to identify objects like gold nuggets where the size, shape, and alloy composition are unknown.

[JC1]

magrail

Induced magnetic fields in aluminum tracks are part of a design for maglev trains:

"There are many techniques for supporting a train on magnetic forces, but the simplest and most promising involves electrodynamic levitation. In this technique, the train has a strong magnet under it and it rides on an aluminum track. The train leaves the station on rubber wheels and then begins to fly on a cushion of magnetic forces when its speed is high enough. Its moving magnet induces electric currents in the aluminum track and these currents are themselves magnetic. The train and track repel one another so strongly with magnetic forces that the train hovers tens of centimeters above the track"

[JC1]

Even Plastic

You guys have done very well.

I'm impressed.

So if you can induce a current into

any material, you can make it magnetic.

Even Plastic.

[JC1]

Enough current

And if you induce enough current

into it. You can make it hot.

And very magnetic.

[JC1]

Braveheart

Where only the Bravest go.

Warning:!!!

Not for the faint of heart.

Magnetism is one sector of the electromagnetic interactions of matter. From a classical perspective, magnetism consists of an energy-containing field that surrounds magnetic poles and that exerts forces on other magnetic poles. At a higher classical level, magnetism and magnetic fields are part of the full electromagnetic interaction, meaning that they are inextricably mixed with electricity and electric fields. Finally, from a full quantum mechanical perspective, magnetism is associated with energy-containing quantum fields, the fields of quantum electrodynamics, that govern the electric and magnetic interactions of matter. These quantum electrodynamic interactions are mediated by virtual photons, cousins of the real photons that include light and radio waves. From this quantum viewpoint, magnets interact with one another by exchanging virtual photons and, like all quantum objects, these photons are emitted and absorbed like particles but travel as waves. Thus magnetism is both a wave and particle phenomenon. It isn't undefined at all; in fact, quantum electrodynamics is probably the most well-established and precise theory in modern physics.

So there you go.

[JC1]

virtual photons

Now if we can just get them little

Virtual Photons

Working for us.

Might have something.



Oh NO !!!!!!!!!

virtual photons

Tech ammo for the frauders.

Expect to see this term in up and coming

advertisements.

[JC1]

remember

Remember

You heard it here first!

http://en.wikipedia.org/wiki/Virtual_particle

http://www.physics.ox.ac.uk/document...ual_photon.htm

Time and Space

http://math.ucr.edu/home/baez/physic...particles.html

http://www.fnal.gov/pub/inquiring/qu...tual_real.html

Does a magnet slow time?

http://www.geocities.com/dsligar.geo/mfield.html

Dipole emission mechanisms for energy transfer operate in many important areas of photophysics. A straightforward analysis based on quantum electrodynamics not only reveals the entanglement of mechanisms usually regarded as 'radiative' and 'radiationless'; it also gives significant physical insights into a host of topics in electromagnetism. These include: the designation of real and virtual photons; propagating and non-propagating character in electromagnetic fields; near-zone and wave-zone effects; transverse and longitudinal character; the effects of retardation; the relation between couplings of static and transition dipoles, and manifestations of quantum uncertainty. A simple extension of the theory to accommodate magnetic dipole as well as electric dipole transitions furthermore reveals key differences between the range dependences of the magnetic and electric fields produced by dipolar emission. With important technological applications, this lesson in advanced physics showpieces the interplay of principles associated with quantum mechanics, electromagnetism and photophysics.

http://www.iop.org/EJ/abstract/0143-0807/25/6/017


Everything I have posted is real.

Well some might say unreal.

Photophysics.

[Qiaozhi]

The Frog That Learned To Fly

You guys have done very well.

I'm impressed.

So if you can induce a current into

any material, you can make it magnetic.

Even Plastic.

Even more bizarre than that, is the levitating frog -> http://www.hfml.ru.nl/froglev.html
Also, check out the movies. Goodness knows what it's doing to the poor frog's brain. Probably erased everything he ever knew.

[JC1]

Why does the frog fly?

Hi Qiaozhi,

Ah yes remember when they did this 1997.

Diamagnetism = A belief system based upon having TWO
poles for each ONE magnet deity.

hee hee that's a joke.

not a good one, but still a joke.

Diamagnetism: It is possible to levitate superconductors and other diamagnetic materials. This is also used in maglev trains. It has become common place to see the new high temperature superconducting materials levitated in this way. A superconductor is perfectly diamagnetic which means it expels a magnetic field. Other diamagnetic materials are common place and can also be levitated in a magnetic field if it is strong enough. Water droplets and even frogs have been levitated in this way at a magnetics laboratory in the Netherlands (Physics World, April 1997).

http://www.resonancepub.com/magphen.htm


Levitating pyrolytic graphite

http://www.scitoys.com/scitoys/scito..._graphite.html



Why does the frog fly?

(this explanation is written in response to numerous inquiries from children who have not studied physics yet ...
or even do not want to study it at all)

http://www.hfml.ru.nl/levitation-simp-expl.html

There is one important aspect in which the diamagnetic levitation differs from any other known way of levitating or floating things. In the case of diamagnetic levitation, the gravitational force is compensated on the level of individual atoms and molecules. This is, in fact, as close as we can - probably ever - approach the science-fiction antigravity machine.

Importantly, the ability to levitate does not depend on the amount of material involved, V, and high-field magnets can be made to accommodate large objects, animals or even man. In the case of living organisms, no adverse effects of strong static magnetic fields are known – after all, our frog levitated in fields comparable to those used in commercial in-vivo imaging systems (currently up to 10T). The small frog looked comfortable inside the magnet and, afterwards, happily joined its fellow frogs in a biology department.

http://www.hfml.ru.nl/froglev.html

[Joe(TX)]

GOLD MAGNET?????

From the above readings it sounds like it would be a non-ferrous magnet. That is, it would attract any of the non-ferrous metals not just Gold. IS THAT RIGHT? Or could it be tuned or put on a certain frequency that it would only be attracted to GOLD?

[Qiaozhi]

From the above readings it sounds like it would be a non-ferrous magnet. That is, it would attract any of the non-ferrous metals not just Gold. IS THAT RIGHT? Or could it be tuned or put on a certain frequency that it would only be attracted to GOLD?

It appears that this will work for all non-ferrous metals.
According to Prof. Laithwaite "the magnitude of the effect is perhaps only 1% of that on a ferromagnetic.". So it's unlikely this will have any practical application to treasure hunting, but it's an interesting phenomenon nonetheless.

[JC1]

work

this will work for all non-ferrous metals.

the frequency dependency would depend

on the resistive and inductive characteristics.

Not the material. Bigger of one would look

like smaller of other.

Therefore still stuck with

the same ol discremination problem.

But hey in a gold field how much other

stuff are you going to find.

The real question would be will it still

work on ferrous metal.

Gold + lots of magnetic black sand

[wyndham]

There is a practical app to this. The alt current either byway of current or alternating magnets are used to separate metals in scrap yards.
The alt current is under the conveyor belt and the induced eddy current is porportional to the type of metal and flips it into different bins.
This is same induction that a PI metal detctor uses, just a different scale.
Wyndham

[gef12]

magnetic gold

HMmm
Dont laugh.. you can use a magnet to attract gold. Read on.
Here in Australia where magnetite is abundant in some gold areas you may come across a gold nugget that has formed around magnetite or visa versa.
When this happens you may use a magnet to attract the gold.
I have seen it done
Food for thought gentlemen
cheers
gef

[Qiaozhi]

HMmm
Dont laugh.. you can use a magnet to attract gold. Read on.
Here in Australia where magnetite is abundant in some gold areas you may come across a gold nugget that has formed around magnetite or visa versa.
When this happens you may use a magnet to attract the gold.
I have seen it done
Food for thought gentlemen
cheers
gef

But in this case, it's not the gold that's being attracted to the magnet, it's the magnetite.