Poise Converter
Convert Poise to Poundal Second Square Foot and more • 56 conversions
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Unit Explanations
PoiseP
Source UnitThe poise (symbol: P) is a unit of dynamic viscosity in the centimeter-gram-second (CGS) system of units. It is defined as the viscosity of a fluid that exerts a shear stress of one dyne per square centimeter when a velocity gradient of one reciprocal second is applied. In essence, one poise corresponds to a viscosity of 1 g/(cm·s). This unit is particularly useful in fields involving fluid mechanics and rheology, where the flow properties of liquids are analyzed.
Current Use
The poise is commonly used in laboratories and industries that deal with fluid properties, such as food processing, pharmaceuticals, and materials science. It is particularly relevant for measuring the viscosity of non-Newtonian fluids and biological fluids, such as blood, where understanding flow behavior is crucial. While the SI unit pascal-second is preferred in many scientific contexts, the poise remains popular in specific applications.
Fun Fact
The poise was historically significant in the study of blood flow, influencing medical research and treatments.
Poundal Second Square Footpdl·s·ft²
Target UnitThe poundal second square foot (pdl·s·ft²) is a unit of dynamic viscosity in the foot-pound-second (FPS) system. It quantifies the internal friction of a fluid, indicating its resistance to flow. One poundal second square foot is defined as the viscosity of a fluid that exerts a shear stress of one poundal per square foot when the velocity gradient is one foot per second. This unit is used primarily in the study of fluid dynamics and engineering applications, where traditional SI units may not be preferred.
Current Use
Today, the poundal second square foot is primarily utilized in certain engineering applications, particularly in industries where fluid flow and viscosity are critical factors. This includes civil engineering, mechanical engineering, and hydrodynamics. While the SI unit of pascal second (Pa·s) is more commonly used, the poundal second square foot finds its application in specific contexts, especially in regions that still adhere to the FPS system for calculating fluid properties.
Fun Fact
The poundal is less commonly used than the more familiar pound-force, which can lead to confusion in some contexts.
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📐Conversion Formula
= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Poise
viscosity • Non-SI
Definition
The poise (symbol: P) is a unit of dynamic viscosity in the centimeter-gram-second (CGS) system of units. It is defined as the viscosity of a fluid that exerts a shear stress of one dyne per square centimeter when a velocity gradient of one reciprocal second is applied. In essence, one poise corresponds to a viscosity of 1 g/(cm·s). This unit is particularly useful in fields involving fluid mechanics and rheology, where the flow properties of liquids are analyzed.
History & Origin
The poise was named after the French scientist Jean Louis Marie Poiseuille, who made significant contributions to the study of fluid dynamics in the 19th century. His work focused on the flow of liquids in tubes, and he is best known for deriving Poiseuille's law, which describes the laminar flow of incompressible fluids. The term was introduced in the 19th century and has been widely used in scientific literature since then, particularly in relation to the study of blood viscosity and other biological fluids.
Etymology: The term 'poise' is derived from the surname of Jean Louis Marie Poiseuille, reflecting his foundational work in fluid dynamics.
Current Use
The poise is commonly used in laboratories and industries that deal with fluid properties, such as food processing, pharmaceuticals, and materials science. It is particularly relevant for measuring the viscosity of non-Newtonian fluids and biological fluids, such as blood, where understanding flow behavior is crucial. While the SI unit pascal-second is preferred in many scientific contexts, the poise remains popular in specific applications.
💡 Fun Facts
- •The poise was historically significant in the study of blood flow, influencing medical research and treatments.
- •One poise is equivalent to 0.1 pascal-seconds, showing the relationship between CGS and SI units.
- •The term 'centipoise' (cP) is commonly used in industries, where 1 P equals 100 cP, making it easier to express lower viscosities.
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Poundal Second Square Foot
viscosity • Non-SI
Definition
The poundal second square foot (pdl·s·ft²) is a unit of dynamic viscosity in the foot-pound-second (FPS) system. It quantifies the internal friction of a fluid, indicating its resistance to flow. One poundal second square foot is defined as the viscosity of a fluid that exerts a shear stress of one poundal per square foot when the velocity gradient is one foot per second. This unit is used primarily in the study of fluid dynamics and engineering applications, where traditional SI units may not be preferred.
History & Origin
The poundal second square foot originated in the early 20th century as part of the foot-pound-second system, which was developed to provide a coherent system of units for mechanics in the imperial system. The concept of dynamic viscosity was first introduced by Sir Isaac Newton in the 17th century, who described it in terms of shear stress and velocity gradients. The term 'poundal' was later coined by British physicists, referring to the force required to accelerate a one-pound mass at one foot per second squared, further establishing the relationship between force, mass, and acceleration within this system.
Etymology: The term 'poundal' derives from the combination of 'pound' (a unit of force) and 'dal' (a suffix indicating measurement), while 'second' refers to time and 'square foot' signifies area.
Current Use
Today, the poundal second square foot is primarily utilized in certain engineering applications, particularly in industries where fluid flow and viscosity are critical factors. This includes civil engineering, mechanical engineering, and hydrodynamics. While the SI unit of pascal second (Pa·s) is more commonly used, the poundal second square foot finds its application in specific contexts, especially in regions that still adhere to the FPS system for calculating fluid properties.
💡 Fun Facts
- •The poundal is less commonly used than the more familiar pound-force, which can lead to confusion in some contexts.
- •In the FPS system, the poundal is a more precise measure of force compared to the pound-force, as it is derived from fundamental units.
- •Dynamic viscosity can change significantly with temperature, making the specific viscosity value context-dependent.
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