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Ken Libbrecht signs his book The Snowflake: Winter’s Secret Beauty for Kathy after a fascinating lecture.

This is the man behind the snowflake postage stamps you may have seen. The beautiful images started out as simply a way to study crystal structures. His talk touched on the dependence of showflake structure on temperature and humidity, some of the history of the research project, scientific motivations, and of course the popular side effects, which have led to several published books.

For more see www.snowcrystals.com/
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Signing - Day 229

Author Steve Ryan from Groveland, CA, USA

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This image, originally posted to Flickr, was reviewed on 13 July 2012 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date.
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current19:00, 13 July 2012Thumbnail for version as of 19:00, 13 July 20121,024 × 768 (149 KB)File Upload Bot (Magnus Manske)Transferred from Flickr by User:Magnus Manske using flickr2commons

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