"Struck By Magnetic Force"

braddick

There are no supid collectors. Just stupid coins. This is my latest:

Cam40

"Struck By Magnetic Force"
What the hells that mean?
anyway...PCI sucks big time.

mgoodm3

Can see the tell-tale bulging of the fields. Clad shrink better.

ldhair

Don't think I have ever seen one quite like it.
Not a bad looking $
What the l are they saying.

mgoodm3

I presume they are referring to this. that dollar is probably a bit smaller than normal.

shrunken coins

richbeat

So THAT'S why the magnetic poles are shifting!

dcarr

Silver dollars are not magnetic. A "Magnetic Force" would have absolutely no affect when applied to to a silver dollar. However, an "electro-magnetic" force could be used to warp or shrink an electrically-conductive metal (magnetic or not).

What is the exact diameter of that coin ?

lordmarcovan

You suppose they meant "shrunk" instead of "struck"?

Damn, PCI used to be a little more intelligent than this, at least. This is like reading an ACG label. SEGS has had some whacked-out label notations, too.

Conder101

I think either term would be proper. Yes the coin has been "shrunk", but it is accomplished by having the coin struck by the expanding magnetic field of the coil as it is energized before it blows itself apart. All metals have some resistance to the passage through it of magnetic force lines. The greater the resistance the greater the compressive force applied to the coin from the rim towards the center. (And from the "dragging" of the metal as the field lines move through the coin.) Since the expansion of the field is for all practical purposes instantaneous, so is the application of the forces through the coin. Struck by magnetic fields sounds apropriate.

Gemini

Does this mean the coin took a ride in a UFO ? oooooo eeeee ooooo

Barry

<< <i>Silver dollars are not magnetic. A "Magnetic Force" would have absolutely no affect when applied to to a silver dollar. However, an "electro-magnetic" force could be used to warp or shrink an electrically-conductive metal (magnetic or not).

What is the exact diameter of that coin ? >>


Most metals react to magnetic fields, if the level of the field is great enough. The classic metals one thinks about are those containing iron and are called ferromagnetic. Other materials that are weakly magnetic are called diamagnetic or paramagnetic. That's why if you go in for an MRI they ask you to remove EVERYTHING metal from your pockets, not just 1943 cents

I've shown this pic before. This quarter was also subjected to Bert Hickman's Tesla coil: