How has a Hexagonal Snow Crystal been Arranged on Science and Design?
K. Izumi Research Institute for Hazards in Snowy Areas, Niigata University, Niigata, 950-2181 Japan; tel. 81-25-262-7054; fax. 81-25-262-7050; email. izumik@cc.niigata-u.ac.jp Y. Nohguchi National Research Institute for Earth Science and Disaster Prevention, Tsukuba, 305-0006 Japan When a hexagonal snow crystal is drawn or designed, the arrangement of it is divided roughly into two types. One is horizontal type; one of three symmetry axes of snow crystal is set horizontally. The other is vertical type; one of three symmetry axes of snow crystal is set vertically. In the historical course of observing snow crystals, from Archbishop O. Magnus (1555) to Dr. U. Nakaya, each observer had used one (vertical or horizontal) type arrangement by preference on his sketches or photographs. Typical example of the horizontal arrangement can be seen in “Snow Crystals” by Bentley and Humphreys (1962). Almost all the illustrations of hexagonal snow crystals in this book are horizontal type. Dr. U. Naka
