Fázisföld

Fázisföld is a term used in some contexts, particularly in older technical literature or specific regional dialects, to refer to a phase transition or a state of matter. The word is a direct translation from German, where "Phase" means phase and "Feld" means field. Therefore, "Fázisföld" literally translates to "phase field."

In physics, a phase field is a continuous variable that describes the state of a system in terms of its phase. For example, in a material undergoing a solid-to-liquid transition, the phase field could take a value of 0 in the solid phase and 1 in the liquid phase, with intermediate values representing the interface between the two phases. The evolution of the phase field is often governed by a differential equation, such as a Cahn-Hilliard equation.

The concept of a phase field is particularly useful for modeling complex phenomena like solidification, grain growth, and phase separation. It allows for the description of interfaces without explicit tracking, simplifying computational approaches. While the term "phase field" is now more commonly used in English, "Fázisföld" might still be encountered in translations or in historical documents. Its meaning is directly tied to the concept of describing different phases within a material or system using a continuous field variable.