The Pascal Second is a unit of measurement for pressure in the International System of Units (SI). It is defined as one newton per square meter. This unit is named after the French mathematician and physicist Blaise Pascal, who made significant contributions to fluid mechanics and pressure. In practical terms, the Pascal Second is often used in scientific and engineering contexts to describe how much force is applied over a specific area. For example, it can be used to measure atmospheric pressure or the pressure exerted by liquids in various applications.