Snowflake Stamps

Four stamps featuring snowflake photographs taken by Professor of Physics Ken Libbrecht (BS ’80) have been issued by the post office just in time for all your holiday-card needs. Libbrecht attended a dedication ceremony for the stamps on October 5 at a major stamp-collecting convention at Madison Square Garden in New York. The snowflake photos are an outgrowth of Libbrecht’s work on the physics of pattern formation during crystal growth (see E&S, 2001, No. 1). His latest, pocket-sized book on the subject, Ken Libbrecht’s Field Guide to Snowflakes, just came out as well. Ho, Ho, Ho!