Units of dynamic viscosity

Dynamic viscosity is a measure of a fluid's resistance to flow and deformation under applied stress. The units of dynamic viscosity are typically expressed in the following ways: 1. **Pascal-seconds (Pa·s)** - This is the SI (International System of Units) unit for dynamic viscosity. 2. **Newton-seconds per square meter (N·s/m²)** - This is equivalent to Pascal-seconds.

The poise is a unit of dynamic viscosity in the centimeter-gram-second (CGS) system of units. It is used to measure a fluid's resistance to flow. One poise is defined as the viscosity of a fluid that exerts a shear stress of one dyne per square centimeter when subjected to a shear rate of one reciprocal second.

The term "Poiseuille" typically refers to a principle in fluid dynamics known as Poiseuille's Law or Poiseuille's equation, which describes the flow of a viscous fluid through a cylindrical pipe. Named after the French physician Jean Léonard Marie Poiseuille, who studied the flow of fluids in the 19th century, the law gives insight into how various factors affect fluid flow.

"Reyn" can refer to a few different things depending on the context, but without specific context, it's difficult to pinpoint exactly what you're asking about. Here are a few possibilities: 1. **Reyn (name)**: It could be a surname or given name. For example, people may have the name "Reyn.