Ice is a solid phases of matter, usually crystalline solid, of a non-metallic substance that is liquid or gas at room temperature, such as ammonia ice or methane ice.... . It can be formed by heating high-density amorphous ice slowly at a pressure of 0.81 GPa. It does not easily form without a nucleating agent.
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 only of a small amount of Ice Ic which is occasionally present in the upper atmosphere.... , (in the Bridgman
Percy Williams Bridgman
Percy Williams Bridgman was an American List of physicists who won the 1946 Nobel Prize in Physics for his work on the physics of high pressures.... nomenclature). Different types of ice, from ice II to ice XIV, have been created in the laboratory at different temperatures and pressures.
