| Author |
 Replies: 27 / Views: 2,835 |
|
|
|
Pillar of the Community
United States
2376 Posts |
|
|
Pillar of the Community
United States
2376 Posts |
I've always felt it a more reliable indicator of a clip as the high points of the rim are pretty much the last things to develop from the strike and the edge of the clip at the rim is where the lack of metal will show the most.
|
|
Pillar of the Community
 United States
5785 Posts |
I like it Mr. Smith and I've noticed a similar "curve" where the rim meets the field on the clips.
(IMHO, it is a mint error. I'm just trying to satisfy my curiosity about some of the features.)
Do you think there may have been a "ragged vein" cutting through to both sides of the planchet that may have held together until sometime after the coin was struck? That might account for the fairly nice strike on the coin, the lumps TB pointed out along the edge, and even the "Smith effect" if metal was missing in that area.
Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
|
|
Pillar of the Community
 United States
6116 Posts |
I am in favor of adding the "Smith Effect" to the numismatic lexicon. It meets all the requirements for a mint-generated effect and just needs now to be verified by a reasonable study of a couple hundred coins to verify it's relative occurrence and variance, if any, based on clip size.
|
|
Pillar of the Community
United States
2775 Posts |
More food for thought. I think we might be reinventing the wheel. "the Doppler effect". Christian Doppler, who described the phenomenon in 1842. Thanks, Doug.
|
|
Pillar of the Community
United States
2376 Posts |
Halo , I'm not a physicist like Doppler but I can see your connection. I was just describing this particular effect as it pertains to incomplete planchets where Doppler was describing how sound and light waves are distorted. From what little that I've read, the Doppler effect could be lent to anything about how a planchet fills or overfills a die when strike preasure and die resistance are the source and the finished coin be considered the detector.
Like I said, this is a much narrower cause and effect as it relates to our particular numismatic interests.
|
|
Pillar of the Community
Canada
6244 Posts |
@HALO: I am sorry to contradict you. Doppel effect do not apply to coins strike of any kind. Doppel effect talk about waves apply in sound, and best is use in radar. Strike of coins waves is complete other thing, it is part of the material physics. Oh, forgot to tell you, another application, or better a consideration of this effect occur in the considerate of productions of the MRI internal tunnel noise. Thanks.
|
|
Pillar of the Community
United States
2775 Posts |
@silviosi, Quote:
Strike of coins waves is complete other thing, it is part of the material physics. Which I somewhat agree. But why does it differ, just because its a solid in motion hitting a wall as opposed to an echo hitting a wall? How does it differ from the cause and effect theory? Thanks, Doug. Edited by Halo1st
08/24/2022 04:11 am
|
|
Pillar of the Community
Canada
6244 Posts |
@Doug: The waves has the propriety of passing a solid barrier or in some cases to rebound. Passing or rebound will not change the form of the waves. In the case of a metal, here a coin in Cu, do to the strike we have a central force which after hit will dispatch laterally at 90 deg. This forces will made the molecular structure to exchange ions, will deform and will go in the direction of the forces.
The Cu who is very malleable, from cubic will become parallelepipedal and if to much force is apply the fracture of the molecular connections will happened. This changes are attributed also to the internal energy cause by the external forces, who are transformed in thermal energy and facilitate the movement of the ions, so the change of the molecular structure.
Lattice Structure: Face-Centered Cubic
Lattice Constant (Å): 3.610
Fusion Heat (kJ/mol): 13.01
In collecting the folks use the word flow of the material. In not a wrong but sometimes could be easy confound with waves.
Edited by silviosi
08/24/2022 3:52 pm
|
|
Pillar of the Community
United States
2775 Posts |
@silviosi good point. could E = mc2 fit in the equation? Thanks, Doug.
|
|
Pillar of the Community
Canada
6244 Posts |
Quote:
@silviosi good point. could E = mc2 fit in the equation? Thanks, Doug.  Wow man, is really funny. Do you want to push in the interspatial studies? LOL Sorry man I have just humiliate 119 and Einstein 226. I am far from. |
|
Pillar of the Community
United States
2376 Posts |
silviosi At some point I was going to use this photo that I took a few years ago while on vacation to illustrate how material will flow to and up a barrier to first fill it's outer limits before filling inwards. Reading what you posted above gave me a chuckle that it's a illustration of a flow using a Wave  i[URL="https://flic.kr/p/27sU7zH]  [/url][URL="https://flic.kr/p/27sU7zH]Aruba[/url] by [URL="https://www.flickr.com/photos/7964616@N02/]stoneman227[/url], on Flickr |
| |
Replies: 27 / Views: 2,835 |
First Page
Posted 08/22/2022 9:30 pm
