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en.wikipedia.org/wiki/Ice_crystals

Ice crystals are solid ice exhibiting atomic ordering on various length scales and include hexagonal columns, hexagonal plates, dendritic crystals, and diamond dust. The hugely symmetric shapes are due to depositional growth, namely, direct ...

en.wikipedia.org/wiki/Ice

Ice is water frozen into a solid state. Depending on the presence of impurities such as particles ..... So-called "diamond dust", also known as ice needles or ice crystals, forms at temperatures approaching −40 °C (−40 °F) due to air with slightly ...

en.wikipedia.org/wiki/Ice_Ih

Ice Ih is the hexagonal crystal form of ordinary ice, or frozen water. Virtually all ice in the biosphere is ice Ih, with the exception ...

www.cas.manchester.ac.uk/resactivities/cloudphysics/topics/formation

There are a number of ways in which ice crystals can form in clouds at temperatures lower than 0°C; one method involves the relatively rare presence of a ...

www1.lsbu.ac.uk/water/hexagonal_ice.html

Sep 25, 2017 ... Hexagonal ice (ice Ih) is the form of all natural snow and ice on Earth as evidenced in the six-fold symmetry in ice crystals grown from water ...

www.britannica.com/science/ice

Sep 22, 2017 ... During the winter months similar ice bodies form on lakes and rivers in .... at temperatures near 0 °C, the ice crystal commonly takes the form of ...

www.its.caltech.edu/~atomic/snowcrystals/ice/ice.htm

There are two closely related variants of ice I: hexagonal ice Ih, which has hexagonal symmetry, and cubic ice Ic, which has a crystal structure similar to diamond ...

www.iceandclimate.nbi.ku.dk/research/flowofice/ice_crystal_structure

Ice crystal structure. In an ice crystal the water molecules are arranged in layers of hexagonal rings. These layers are called the basal planes of the crystal, and ...

www.ask.com/youtube?q=Ice+Crystal+Forms&v=3Qasw7lb2UM
Oct 21, 2011 ... More about this programme: http://www.bbc.co.uk/programmes/b016fpyy Dr Gabrielle Walker and Dr Andrea Sella investigate the molecular ...