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why arn't ALL coins on edge,,,
- Thread starter grouser
- Start date
JimGilmore
Active member
The falsehood to your question is that coins are sinking......
drop a coin on any hard surface how many will land and remain on edge ?
Drop a coin in grass and the coin will fall till it is reasting and the plants will move as they grow till the coin is below them...usually flat. in order for a coin to sink you would have to have something lighter for it to sink through ? So since there is NO lighter what actully happens is material settles over it...plant matter dust and soil...carried by the wind.
drop a coin on any hard surface how many will land and remain on edge ?
Drop a coin in grass and the coin will fall till it is reasting and the plants will move as they grow till the coin is below them...usually flat. in order for a coin to sink you would have to have something lighter for it to sink through ? So since there is NO lighter what actully happens is material settles over it...plant matter dust and soil...carried by the wind.
uuummmmm maybe you should read this article,,,,, I take this quote from near the end of the read just to get you looking and maybe read it all,,,,JimGilmore said:
"As a coin sinks in the earth, the deeper it goes the slower it will sink because the dirt is more compacted at depth. Once again, the coin will stop sinking when it reaches the level in the soil that is compacted enough to equal the density of the coin; and that's deep!"...............................
check the whole thing out here,,, ( I will have to PM you the link,,, they don't allow links to other MD sites here,,, check you mail)
Coins sink into the earth for the same reason an aeroplane falls out of the sky if a wing falls off or it's engines stop running...gravity. Gravity is a phonomenon recognised quite some time ago, and the result of this phenomenon attracts anything near or on the earth to the centre of the earth...that's why we dont all fly off the earth as it spins around the sun...it is the smae force of gravity that attracts things on the ground into the ground...that's why when you go to the beach you find objects at many different depths in the sand, as the force of gravity, together with other forces, attract these objects towards the centre of the earth. The way a coins sinks (flat) is due to the force of gravity exerted on the coin and is influenced, not only by its mass, but also by its shape and the relationship of mass to shape. A very simplified answer to your question, I know, but you could probably write a thesis on why a coin sinks flat rather than on edge. Other influences may make coions go on edge or at an angle, but an unassisted or unimpeded coin will sink flat. Putting a coin on some dirt in a jar is not a good test because of the artificial pressures introduced by the enclosure.
JimGilmore
Active member
Coins do not SINK....as straight relationshp of gravity....
Coins fall to the ground as of gravity...once there.....something has to move for them to fall further.......
This is usually cased by the hydroevaporative system......
water falls to earth...in doing so it displaces soils and in doing so the coin then can fall lower...but in the abscence of water movement wind will bring new material to cover the coins....
wind can also cause erosion and uncover coins allowing the to fall and or move by gravity .plus the actions of animal lifeie earthworms/microbs and other life can cause displacment that will allow the coins to settle further....but the idea that the just sink in incorrect.
The earth is after all a living system....
Coins fall to the ground as of gravity...once there.....something has to move for them to fall further.......
This is usually cased by the hydroevaporative system......
water falls to earth...in doing so it displaces soils and in doing so the coin then can fall lower...but in the abscence of water movement wind will bring new material to cover the coins....
wind can also cause erosion and uncover coins allowing the to fall and or move by gravity .plus the actions of animal lifeie earthworms/microbs and other life can cause displacment that will allow the coins to settle further....but the idea that the just sink in incorrect.
The earth is after all a living system....
bigolhorns
New member
JimGilmore said:
Coins do sink..................what you said is like saying ships don't sink. Here in Oregon they sink and very fast
JimGilmore
Active member
In some ways..it is a semantic...
But....when an item sinks....we think of it going from the surface to the bottom of say the river,lake,stream..and so on....
Sinking is something done in terms of an action and then it stops period.....
One has to realize that they will find a point at which they can go NO further unless another force takes place....which is what HAPPENS CONSTANTLY...items are covered daily by dust,meteorites,skin cells from animals and constant detritus that falls everywhere.....
SO while items may be deeper from the surface they may well be NO close to the center of the earth. Land masses Rise and fall also...
SO as I have said it is a semantic...
But....when an item sinks....we think of it going from the surface to the bottom of say the river,lake,stream..and so on....
Sinking is something done in terms of an action and then it stops period.....
One has to realize that they will find a point at which they can go NO further unless another force takes place....which is what HAPPENS CONSTANTLY...items are covered daily by dust,meteorites,skin cells from animals and constant detritus that falls everywhere.....
SO while items may be deeper from the surface they may well be NO close to the center of the earth. Land masses Rise and fall also...
SO as I have said it is a semantic...
The force of gravity does not stop at the earth's surface e.g. if you walk across an open mine shaft you will fall in, and you will fall until you reach the botton, even if that mine shaft is 2 miles deep. Gravity's force draws objects towards the centre of the earth, not just to the outer edge, so a coin or rock will be subjected to the force of gravity while both exist. An object will move towards the centre of the earth so long as the medium through which it is moving allows it to do so, so if a coin is sinking through soft sand and it comes to a large rock which is not moving, then the coin will be able to go no further, because its progress has been stopped by something which is more dense. Thus, if I fell out of an aeroplane at 30,000 ft., I'd fall until I hit a medium which was more dense eg the earth's surface...You're right Jim when you mention the miniscule creatures in the soil...their behaviour and movement can allow objects to move through the soil more quickly, but it is the force of gravity which is causing the object to move downwards, rather than sideways. Pressure from other sources can influence what happens to things in the soil e.g. people or animals walking or cars or trucks driving near or directly over the object. Of course there are other forces which can affect movement of things in the ground, and we know of instances where rocks are found to be rising out of the ground (or so it seems) Forces from within the earth's crust can force things upwards (eg volcano eruptions), but generally, the humble coin will be attracted towards the centre of the earth until an inquisitive detectorist interrupts its journey.
JimGilmore
Active member
You all put the cart before the horse though...and that is my point..
if you step into a hole or mine shaft..you must first step into the whole or mine shaft...ie outside force...
your standing in the surface YOU DO NOT SINK into the earth.
Yes, standing still in the water at the beach, wave action will remove sand from around and under your feet as you stand there and you will sink. I am sure if there were a current of water under the Titanic it would sink further but there is no current under it. I am pretty sure that the titanic is not sitting on bedrock and that what is is sitting on is neither more dense or heavy that the boats parts....just no action is there to let it move deeper, or displace the material under it.
if you step into a hole or mine shaft..you must first step into the whole or mine shaft...ie outside force...
your standing in the surface YOU DO NOT SINK into the earth.
Yes, standing still in the water at the beach, wave action will remove sand from around and under your feet as you stand there and you will sink. I am sure if there were a current of water under the Titanic it would sink further but there is no current under it. I am pretty sure that the titanic is not sitting on bedrock and that what is is sitting on is neither more dense or heavy that the boats parts....just no action is there to let it move deeper, or displace the material under it.
"your standing in the surface YOU DO NOT SINK into the earth." ahhh but here you make the point for the theory that once the dirt is saturated the coin WILL sink,,,,, ever heard of quicksand? ever stepped in mud? you SINK until you hit soil that is not saturated,,, it's that gravity thing working again
digitaltim
New member
Google it..
http://www.google.com/#q=rock+cycle
Both arguments are right, but there's a bigger picture at work.
This is a good illustrated example: http://www.minsocam.org/msa/k12/rkcycle/rkcycleindex.html
Gravity and sediment will bury coins...eventually all land is recycled back in to the earth... It's weathered and pushed around constantly... It sinks and rises...in example:
http://www.google.com/#q=rock+cycle
Both arguments are right, but there's a bigger picture at work.
This is a good illustrated example: http://www.minsocam.org/msa/k12/rkcycle/rkcycleindex.html
Gravity and sediment will bury coins...eventually all land is recycled back in to the earth... It's weathered and pushed around constantly... It sinks and rises...in example:
Terry Soloman
New member
I still say if everybody just drank a beer, or three - including the darn coin, no one would be "on edge!" 
