👉 A ratio fluid, often referred to as a liquid-to-gas mixture or simply a fluid, is a substance that exists in a state where it combines both liquid and gaseous properties. In practical terms, it's a mixture where the components are in a dynamic equilibrium, constantly transforming between liquid and gas phases. For example, in everyday life, when water evaporates from a puddle, it changes from a liquid to a gas (water vapor), but this process continues as long as there's heat and humidity. The ratio fluid concept is crucial in understanding many natural phenomena, such as weather patterns, ocean currents, and even industrial processes like distillation. It's a fundamental concept in thermodynamics and plays a significant role in fields ranging from chemistry to environmental science.