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<p>[QUOTE=&quot;Hobo, post: 317843, member: 11521&quot;]I found the following explanation of how a watermark is made at <a href="http://www.pbs.org/wgbh/nova/transcripts/2314secr.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.pbs.org/wgbh/nova/transcripts/2314secr.html" rel="nofollow">http://www.pbs.org/wgbh/nova/transcripts/2314secr.html</a> :</p><p>&nbsp;</p><p>&quot;There&#039;s a common misconception that the watermark is something imbedded in the paper after the paper is made. Watermarks are actually a part of the three-dimensional structure of the paper. They&#039;re nothing added to the paper. They are formed within it. The fiber is more dense in the opaque, dark areas, and there&#039;s less fiber in the light, more transmissive areas. And as a result, you have this astounding range in tonal gradation, that to the feel, to the hand of the paper, it&#039;s hard to imagine that this is simply a variation in the thickness and the density of the paper.&quot;</p><p>&nbsp;</p><p>(I hope it is OK to post this quotation here.)[/QUOTE]</p><p><br /></p>

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