冰晶（英語： ice crystal ）是冰的宏观 晶体形式。冰晶在光学及电学等物理性质方面有各向异性，并且具有较高的介电常数。 [1] 冰晶常呈六角柱状、六角板状、枝状、针状等形状，由于大气中的冰晶一般由水蒸气 凝華产生，因此具有非常對稱的外型。

Ice crystals are solid ice in symmetrical shapes including hexagonal columns, hexagonal plates, and dendritic crystals. [1] Ice crystals are responsible for various atmospheric optical displays and cloud formations .

Surface molecular structure is the arbiter in the contest between energy and entropy that largely determines how ice and snow crystals develop. Ice shapes our world. The water-to-ice phase transition tempers the climate, fractures rock, and squeezes material …

2021年1月4日 · As Bentley’s photographs captured, there are four basic habits of ice crystals: the hexagonal plate, the needle, the column and the dendrite. Temperature and the vapor content of the environment determine the particular crystal habit.

2025年3月26日 · Ice - Structure, Formation, Properties: At standard atmospheric pressure and at temperatures near 0 °C, the ice crystal commonly takes the form of sheets or planes of oxygen atoms joined in a series of open hexagonal rings.

Currently, twenty-one phases, including both crystalline and amorphous ices have been observed. In modern history, phases have been discovered through scientific research with various techniques including pressurization, force application, nucleation agents, and others. On Earth, most ice is found in the hexagonal Ice I h phase.

1990年1月2日 · Ice crystal refers to a small densely packed crystal of ice in the size range of mm to cm that evolves and interacts dynamically, growing, rotating, deforming, fragmenting, and forming new crystals as temperature and impurity content vary.

2025年2月15日 · According to the National Oceanic and Atmospheric Administration, an incredibly cold droplet of water freezes onto a dust or pollen particle in the sky to produce a snowflake. As a result, an ice...

2024年3月30日 · In the free air, ice crystals compose cirrus-type clouds, and near the ground they form the hydrometeor called, remarkably enough, "ice crystals" (or ice prisms). They are one constituent of ice fog, the other constituent being droxtals. On terrestrial objects the ice crystal is the elemental unit of hoarfrost in all of its various forms.

2025年3月4日 · Water - Structures, Ice, Crystals: In the solid state (ice), intermolecular interactions lead to a highly ordered but loose structure in which each oxygen atom is surrounded by four hydrogen atoms; two of these hydrogen atoms are covalently bonded to the oxygen atom, and the two others (at longer distances) are hydrogen bonded to the oxygen ...