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Date: Fri, 11 Jun 2004 12:26:00 -0500
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From: "mario" <mariobyrge@comcast.net>
Subject: TESTING A COINS "RING" HARMONIC IN RAY'S WORK
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Testing a coin for the ring is always necessary, but how practical is it? D=
ave Wznuk posted yesterday that he saw George III being made in Williamsbur=
g and they all rang as well. Factors do play a major part in a coin's "ring=
".
By comparison, you can have 2 copper planchets of the same size and weight=
,.......1 planchet is "new", produced this year 2004 and the other "old" pr=
oduced in 1788,........they will ring differently, based upon some factors.
First, the age of the copper. Like all metals, the metal's chemcal composit=
ion breaks down with age versus enviroment. Oxidation, which is a form of c=
orrosion adheres to the copper thus reacting on the surfaces of the planche=
t implanting tiny micro corrosive agents,......enough corrosion also effect=
s the weight in various degree adhered. New copper also was refined and in =
todays process, a radioactive ingredient is used, this practice of refining=
had been since 1939, so the new planchets chemical oriontation will be dif=
ferent than the old copper planchet. Each of these factors will change the =
"desciples",....which is the "pitch" of the "sound" that the planchet gives=
off,........although, to a person and importantly depending on the person=
s age, the rate of "pitch" will seem different,........apersons age will co=
mpensate that persons hearing ability. So at Ray's workplace, could these t=
est be done accurately? Unless he has the right equipment to preform such r=
est, then accuracy maybe in opinion form as well.
Mario
----- Original Message -----=20
From: John M. Kleeberg=20
To: colonial-coins@yahoogroups.com=20
Sent: Friday, June 11, 2004 11:15 AM
Subject: [Colonial Numismatics] Re: One Experience in Using the "Ring Tes=
t" to Determine if Cast
--- In colonial-coins@yahoogroups.com, Ray Williams <njraywms@o...>=20
wrote:
> Actually John,=20=20=20=20
> I have test equipment in my shop. I could fairly accurately=20
determine the frequency of the ring. Harmonics could be a problem...
> Ray
That's be great - very interesting to learn about the results.=20=20
Harmonics, as you say, may be a problem. A number of coins that I=20
have rung seem to play two notes.
Best,
John M. Kleeberg
Yahoo! Groups Sponsor=20
ADVERTISEMENT
=20=20=20=20=20=20=20=20=20=20=20=20=20
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<DIV><FONT face=3DArial size=3D2>Testing a coin for the ring is always nece=
ssary,=20
but how practical is it? Dave Wznuk posted yesterday that he saw George III=
=20
being made in Williamsburg and they all rang as well. Factors do play a maj=
or=20
part in a coin's "ring".</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>By comparison, you can have 2 copper=
=20
planchets of the same size and weight,.......1 planchet is "new", produced =
this=20
year 2004 and the other "old" produced in 1788,........they will ring=20
differently, based upon some factors.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>First, the age of the copper. Like all met=
als, the=20
metal's chemcal composition breaks down with age versus enviroment. Oxidati=
on,=20
which is a form of corrosion adheres to the copper thus reacting on the sur=
faces=20
of the planchet implanting tiny micro corrosive agents,......enough corrosi=
on=20
also effects the weight in various degree adhered. New copper also was refi=
ned=20
and in todays process, a radioactive ingredient is used, this practice of=20
refining had been since 1939, so the new planchets chemical oriontation wil=
l be=20
different than the old copper planchet. Each of these factors will change t=
he=20
"desciples",....which is the "pitch" of the "sound" that the planchet gives=
=20
off,........although, to a person and importantly depending on the pe=
rsons=20
age, the rate of "pitch" will seem different,........apersons age will=20
compensate that persons hearing ability. So at Ray's workplace, could these=
test=20
be done accurately? Unless he has the right equipment to preform such rest,=
then=20
accuracy maybe in opinion form as well.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Mario</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LE=
FT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>Fro=
m:</B>=20
<A title=3Djmkleeberg@yahoo.com href=3D"mailto:jmkleeberg@yahoo.com">John=
M.=20
Kleeberg</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
title=3Dcolonial-coins@yahoogroups.com=20
href=3D"mailto:colonial-coins@yahoogroups.com">colonial-coins@yahoogroups=
.com</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, June 11, 2004 11:15=
=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [Colonial Numismatics] Re=
: One=20
Experience in Using the "Ring Test" to Determine if Cast</DIV>
<DIV><BR></DIV><TT>--- In <A=20
href=3D"mailto:colonial-coins@yahoogroups.com">colonial-coins@yahoogroups=
.com</A>,=20
Ray Williams <<A href=3D"mailto:njraywms@o">njraywms@o</A>...>=20
<BR>wrote:<BR>> Actually John, =20
<BR>> I have test equipment in my shop. =
I=20
could fairly accurately <BR>determine the frequency of the ring. =20
Harmonics could be a problem...<BR>> Ray<BR><BR>That's be great - very=
=20
interesting to learn about the results. <BR>Harmonics, as you say, =
may=20
be a problem. A number of coins that I <BR>have rung seem to play t=
wo=20
notes.<BR><BR>Best,<BR><BR>John M. Kleeberg<BR><BR></TT><BR></BODY></HTML=
>
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