👉 The term "fluid" refers to a substance that can flow or change shape without breaking apart into distinct parts. It encompasses a wide range of materials, from liquids like water and oil to more complex substances such as blood, synapses in the brain, and even certain polymers. In physics, fluids are characterized by their viscosity, which is a measure of their resistance to flow. This property allows them to move smoothly and adapt their shape to fill any space, whether it's a narrow pipe or a wide ocean. The concept of fluidity is crucial in understanding various natural phenomena and technological applications, from the movement of water in rivers to the functioning of engines and hydraulic systems.
