Continuity Equation

The continuity equation is a principle used in various fields, particularly physics and fluid dynamics, to describe the conservation of mass. It states that in a flowing fluid, the mass entering a certain volume must equal the mass leaving it, assuming there's no accumulation within that volume. This means that if a fluid’s speed increases, its area must decrease, and vice versa. Essentially, it helps us understand how fluids behave as they flow through different shapes and sizes of spaces, ensuring that nothing is lost or created in the process.