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<p>[QUOTE=&quot;desertgem, post: 820039, member: 15199&quot;]Good points!</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; No, the environmental molecules that would cause toning/corrosion, are not &quot;attracted&quot; to the sacrificial coin ( at least not until they get within the range of molecular attraction , which is basically on the molecular surface. But the movement of the molecules in any container or out, is due to &quot;Brownian movement&quot;, a random movement whose speed is due to the temperature above absolute zero , and most coins are about 300 degrees C above absolute, so the movement is rather rapid. Molecules hit us all of the time, but of course we don&#039;t feel them due to their very small mass. However this does lead to diffusion , where molecules will move from an area of high concentration to an area of lower concentration , due to this random movement, until all are equal.&nbsp; So the &quot;bad&quot; molecules that hit a barrier such as a slab, flip, etc, can not pass through unless it hits a &quot;seam&quot; or opening that is not air tight. If such a molecule hits a normal coin surface with already some patina present, the chance it will molecularly react is much less than hitting the sacrificial coin with fresh surfaces where an reaction can occur and remove that molecule from reacting with the other coins. If a sacrificial surface is not present, the molecule will continue to bounce around forever, fueled by environmental heat until it does land on a reactive unbound site on one of your &quot;protected&quot; coins, and toning /corrosion increases on that coin. </p><p><br /></p><p>&nbsp;&nbsp; Your concept of moving water by gravity doesn&#039;t apply as that movement is due to the effects of gravity, and not the effects of heat. At absolute zero, the molecules don&#039;t move, no coin would ever tone or corrode ( except for possibly the minor effects of subatomic particles, and I don&#039;t know if that even happens).</p><p><br /></p><p>&nbsp;&nbsp; I wasn&#039;t proposing that this project was better than the commercial products ( except it provides an indicator of the level of activity in the contained area). After a few days, the faster reaction with the sacrificial copper will reduce the concentration of deleterious molecules in its vicinity and more of these deleterious gases will move from other areas ( good coins)&nbsp; by diffusion to try and establish an even level in the container. This is the same as with the commercial product.&nbsp; Both work with to the 2nd law of Thermodynamics ( Enthropy). </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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