Coffee rings and tide lines

NPR and All Things Considered had an amazing story about the physics
of coffee rings on Wednesday August 17, 2011:

    Scientists Crack The Physics Of Coffee Rings

    <URL:http://www.npr.org/2011/08/17/139681851/
        scientists-crack-the-physics-of-coffee-rings>

    **** Moderator's comments: The above URL has been wrapped for
    email. There should be no newline.

The NPR website even has a video showing how a tide line forms. The
scientists discuss not only coffee rings but also the physics of
ink-jet printing ink and other materials such as paint. The full
article appears in the journal NATURE.

Bill Minter
William Minter Bookbinding and Conservation, Inc.
4364 Woodbury Pike
Woodbury PA 16695
814-793-4020
Fax: 814-793-4045


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                  Conservation DistList Instance 25:11
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