30.1 MB (2.7 MB compressed)
3365 x 3125 pixels
28.4 x 26.4 cm ⏐ 11.2 x 10.4 in (300dpi)
KENNETH LIBBRECHT / SCIENCE PHOTO LIBRARY KENNETH LIBBRECHT / SCIENCE PHOTO LIBRARY
Star snowflake, light micrograph. Snowflakes are ice crystals that form in air that has a temperature near the freezing point of water. If the air is calm, then a symmetrical, hexagonal snowflake can form. The two main growth patterns observed are faceting and branching. When growth is fast and unstable, branching patterns create a dendritic snowflake. Slower growth allows the straight lines and hexagonal shapes of a plate snowflake. This is a simple star snowflake.
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