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<p>[QUOTE=&quot;GDJMSP, post: 2858801, member: 112&quot;]If you want to see high magnification pics of different kinds of luster read this thread - <a href="https://www.cointalk.com/threads/morgan-toning-vs-peace-toning.12578/" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/threads/morgan-toning-vs-peace-toning.12578/">https://www.cointalk.com/threads/morgan-toning-vs-peace-toning.12578/</a></p><p><br /></p><p>Then look at this link -&nbsp; &nbsp;&nbsp; <a href="http://photobucket.com/gallery/user/USS656/media/cGF0aDovMTk2NEtlbm5lZHlQcm9vZkxlZnRvZkkuanBn/?ref=" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://photobucket.com/gallery/user/USS656/media/cGF0aDovMTk2NEtlbm5lZHlQcm9vZkxlZnRvZkkuanBn/?ref=" rel="nofollow">http://photobucket.com/gallery/user/USS656/media/cGF0aDovMTk2NEtlbm5lZHlQcm9vZkxlZnRvZkkuanBn/?ref=</a></p><p><br /></p><p>I first used the same illustration I used in that thread - /\/\/\/\/\&nbsp; - over 20 years ago to try and explain luster. I&#039;d never seen anybody else use that simple illustration before, never even heard of it before that. But today they use that same illustration in the ANA classes to explain and illustrate luster. Did they get the idea from me ? I have no idea, it&#039;s certainly possible that somebody else had the same idea I did. As a matter of fact it seems they use the same illustration in scientific circles - </p><p><a href="http://lab-training.com/2014/05/06/dispersion-of-light-in-spectroscopy/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://lab-training.com/2014/05/06/dispersion-of-light-in-spectroscopy/" rel="nofollow">http://lab-training.com/2014/05/06/dispersion-of-light-in-spectroscopy/</a></p><p><br /></p><p>In both cases, my illustration and the one found in that link, show how light is reflected and refracted from the fine grooves of flow lines on a coin. Change the angles slightly, change the height, and or width, and or depth of the grooves and you change the luster. </p><p><br /></p><p>On business strikes the flow lines are higher, wider, and deeper than those on Proof coins. But the flow lines are still there on both coins, they merely reflect and refract the light differently.[/QUOTE]</p><p><br /></p>

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