Ice crystals


Ice crystals

Ice crystals - small crystalline form of ice including hexagonal columns, hexagonal plates, dendritic crystals, and diamond dust.

Temperature and water vapor humidity determine crystalline forms. Ice crystals are responsible for various atmospheric optics displays in the atmosphere. The principal axis (c axis) of a single crystal of ice is perpendicular to the axis of hexagonal symmetry. Planes perpendicular to this axis are called basal planes.Ice clouds are composed of ice crystals. The most notable one is cirrus and ice fog.

Geometry

Geometry

See also

* snow
* Aeroplankton

External links

* [http://www.its.caltech.edu/~atomic/snowcrystals/ Caltech homepage]
* [http://amsglossary.allenpress.com/glossary/search?id=ice-crystal1 American Meteorological Society Glossary]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • ice crystals — A type of precipitation composed of unbranched ice crystals in the form of needles, columns, or plates. These have a light downward motion and may fall from a cloudless sky …   Aviation dictionary

  • ice crystals — Meteorol. precipitation consisting of small, slowly falling crystals of ice. Also called ice needles. [1840 50] * * * …   Universalium

  • ice crystals — Meteorol. precipitation consisting of small, slowly falling crystals of ice. Also called ice needles. [1840 50] …   Useful english dictionary

  • Ice algae — is a general term used to describe all the various types of algal communities encountered in annual and multi year sea ice. The ice algal communities play an important role in primary production and are therefore considered an important part of… …   Wikipedia

  • Ice-minus bacteria — is a nickname given to a variant of the common bacterium Pseudomonas syringae ( P. syringae ). This strain of P. syringae lacks the ability to produce a certain surface protein, usually found on wild type ice plus P. syringae . The ice plus… …   Wikipedia

  • ice plant — n. a succulent Old World plant (Mesembryanthemum crystallinum) of the carpetweed family, having thick leaves covered with thin, glistening cells that look like ice crystals …   English World dictionary

  • ice-fog — «YS FOG, FG», noun. a fog of ice crystals formed during extremely low temperatures, especially in the Arctic …   Useful english dictionary

  • ice in lakes and rivers — Introduction       a sheet or stretch of ice forming on the surface of lakes and rivers when the temperature drops below freezing (0° C [32° F]). The nature of the ice formations may be as simple as a floating layer that gradually thickens, or it …   Universalium

  • Ice — This article is about water ice. For the broader concept of ices as used in the planetary sciences, see volatiles. For other uses, see Ice (disambiguation) …   Wikipedia

  • ice — iceless, adj. icelike, adj. /uys/, n., v., iced, icing, adj. n. 1. the solid form of water, produced by freezing; frozen water. 2. the frozen surface of a body of water. 3. any substance resembling frozen water: camphor ice …   Universalium


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.