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<p>[QUOTE=&quot;Cringely, post: 768690, member: 22271&quot;]<b>removing mass</b></p><p><br /></p><p>Originally Posted by physics-fan3.14 </p><p><br /></p><p>(much wonderful stuff snipped)</p><p><br /></p><p>When a toned coin is dipped, it is the thin film that is removed. Using a precise enough scale, a coin can be weighed and then dipped. A perceptible amount of silver (or rather, silver sulfide – most solutions do not affect the underlying silver) is removed in the process.</p><p><br /></p><p><br /></p><p><br /></p><p>my guess is that you would be removing less that one milligram by dipping. Most inexpensive scales don&#039;t have that kind of resolution.. Another point to consider is that it is easier to strip off an atom residing on a sharp point than one in the middle of a planar surface. I believe that is one reason why luster (the diffusion of light off of microstructural flow lines) goes when you overdip.[/QUOTE]</p><p><br /></p>

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