👉 A strict fluid refers to a fluid that adheres tightly to the walls of its container, often due to strong intermolecular forces between the fluid molecules and the container surface. This tight adherence results in minimal leakage and a high resistance to flow, making it difficult for the fluid to escape. In practical terms, this characteristic is crucial in applications like vacuum tubes and certain types of seals where maintaining a contained fluid environment is essential. The term "strict" emphasizes the high degree of adhesion and low permeability, ensuring that the fluid remains confined within its defined boundaries.
