👉 The absolute fluid, also known as the absolute reference fluid, is a theoretical concept in physics that represents the fluid state of matter at absolute zero temperature (0 Kelvin or -273.15°C), where all molecular motion ceases, and the substance exists as a perfect crystal lattice of atoms or molecules. Unlike ordinary fluids, which flow and change shape in response to external forces, the absolute fluid at absolute zero is a static, rigid structure with no entropy. This concept is more of a theoretical construct used to understand the behavior of matter under extreme conditions, particularly in the context of quantum mechanics and condensed matter physics. It serves as a baseline for understanding phase transitions and the properties of materials at their most fundamental level.
