Friday, January 1, 2010

Snow crystals

Water molecules in an ice crystal form a hexagonal lattice – a simple snowflake. The elaborate six-armed symmetry of snowflakes is derived from this ice crystal lattice.

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Podcast: David Esslemont on the history of the Gregynog and Solmentes Presses

Gregynog Hall Nigel Beale aka The Literary Tourist , came to visit and recorded our conversation in which he asked me about the history...