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A more stable polymorph of water than common ice (Ice I h), which instead of melting when above 0°C (32°F), only melts at 45.8°C (114.4°F). When ice-nine comes in contact with liquid water below 45.8°C, it acts as a seed crystal, and causes the solidification of the entire body of water, which quickly crystallizes as more ice-nine ...
Iron can be incorporated into glass to absorb infrared radiation, for example in heat-absorbing filters for movie projectors, while cerium(IV) oxide can be used for glass that absorbs ultraviolet wavelengths. [85] Fluorine lowers the dielectric constant of glass. Fluorine is highly electronegative and lowers the polarizability of the material.
Based on several climate models, the planet is the most likely of the system to have retained its water, [220] and the most likely to have liquid water for many climate states. A dedicated climate model project called TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI) has been launched to study its potential climate states. [ 240 ]