hexagonal column

hexagonal column

[hek′sag·ə·nəl ′käl·əm]
(meteorology)
One of the many forms in which ice crystals are found in the atmosphere; this crystal habit is characterized by hexagonal cross-section in a plane perpendicular to the long direction (principal axis, optic axis, or c axis) of the columns; it differs from that found in hexagonal platelets only in that environmental conditions have favored growth along the principal axis rather than perpendicular to that axis.
References in periodicals archive ?
ON A PEDESTAL--This three-dimensional, simulated ice crystal resembles a common, simple type of natural snowflake: a hexagonal column whose faces are indented because they grow more slowly than the column's edges.
Choose from the following and call 0901 380 1288 to make your bid - a) pounds 960, b) pounds 450 or c) pounds 1,800 Lot Eight: A 1950s table lamp with geometric stylising on hexagonal column, topped by a pale pink circular globe.
It's a big hexagonal column housing a series of computers that are running an artificial universe.
Using 3D printing to create parts of his work to give detail that he could not achieve by hand, he includes hexagonal granulation and intertwining hexagonal columns.
19 DEVILS POSTPILE NATIONAL MONUMENT Geology meets geometry in a massive rock formation of hexagonal columns formed by an ancient lava flow.
A cool breeze brought autumn leaves tumbling down like gold coins from a gunmetal sky as we pulled up en masse at the Giant's Causeway, the 37,000 black hexagonal columns first publicised in 1693 by the Royal Society as one of the great wonders of the natural world.
From Belfast, many CIE Tours include a tour of the glorious Antrim coast, where you'll witness the natural wonder of the Giant's Causeway, hexagonal columns of layered basalt stone, which formed from a volcanic eruption 60 million years ago; and the nine Glens of Antrim, lush, green places that delight the senses.
Frank went to the source, a basalt escarpment three hundred miles away, in the dry country of eastern Washington, near Moses Lake, where a giant machine could pluck the nine individual stone spires a dozen feet tall from where they had crystallized over ten million years ago into hexagonal columns that had weathered to a rusty brown.
The torch was at the World Heritage site's hexagonal columns of rock, held aloft by Denis Broderick high above the Atlantic on Carrick a Rede rope bridge.
This week, he tackles natural patterns, searching for them in such features as the Giant's Causeway's hexagonal columns, honeycombs, salt crystals and soap bubbles.
The Code BBC2, 9pm Marcus du Sautoy searches for natural patterns, beginning with the hexagonal columns of Northern Ireland''s Giant''s Causeway, and moving on to everything from honeycombs to soap bubbles, claiming such formations are far from random but part of a hidden code that governs the world.