Pascal Second Converter
Convert Pascal Second to Picostokes and more • 56 conversions
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Unit Explanations
Pascal SecondPa·s
Source UnitThe pascal second (Pa·s) is the SI unit for dynamic viscosity, representing the internal friction of fluids. It quantifies the resistance of a fluid to flow when an external force is applied. A fluid with a dynamic viscosity of one pascal second will flow under a shear stress of one pascal at a rate of one meter per second. It is a derived unit, meaning it is defined in terms of the base SI units: kilograms (kg), meters (m), and seconds (s). The pascal second is critical in fluid dynamics, engineering, and various scientific disciplines where fluid behavior is studied.
Current Use
Today, the pascal second is widely used in various industries including chemical engineering, food processing, and materials science to characterize the flow properties of fluids. It is essential in applications involving lubrication, mixing, and fluid transport where understanding viscosity is crucial for efficiency and safety.
Fun Fact
The pascal second is named after Blaise Pascal, who also has the unit of pressure named after him.
PicostokespSt
Target UnitThe picostoke (symbol: pSt) is a unit of kinematic viscosity, defined as one trillionth (10^-12) of a stoke. The stoke itself is a measure of the internal friction of a fluid, representing the viscosity of a fluid in which a particle falls at a velocity of one centimeter per second under the influence of gravity. The picostoke is primarily used in scientific and engineering contexts where extremely low viscosities are relevant, particularly in fields like microfluidics and nanotechnology. This unit allows for the precise measurement of the behavior of fluids at very small scales, which is crucial for both theoretical and applied research in various scientific disciplines.
Current Use
Picostokes are used in cutting-edge scientific research and industrial applications where precise control over fluid properties is necessary. Industries such as pharmaceuticals, biotechnology, and materials science often utilize picostokes in their processes, particularly in scenarios involving micro-scale fluid dynamics. For instance, researchers in nanotechnology might measure the viscosity of fluids used in drug delivery systems, ensuring that the fluids behave predictably at the nano scale. Furthermore, picostokes can be used to analyze the rheological properties of new materials.
Fun Fact
The stoke is named after Sir George Stokes, who formulated Stokes' Law regarding the motion of spheres through viscous fluids.
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Pascal Second
viscosity • Non-SI
Definition
The pascal second (Pa·s) is the SI unit for dynamic viscosity, representing the internal friction of fluids. It quantifies the resistance of a fluid to flow when an external force is applied. A fluid with a dynamic viscosity of one pascal second will flow under a shear stress of one pascal at a rate of one meter per second. It is a derived unit, meaning it is defined in terms of the base SI units: kilograms (kg), meters (m), and seconds (s). The pascal second is critical in fluid dynamics, engineering, and various scientific disciplines where fluid behavior is studied.
History & Origin
The pascal second was introduced as part of the metric system in the late 20th century, named after Blaise Pascal, a French mathematician and physicist known for his contributions to fluid mechanics and pressure. The unit was formalized in 1971 during the 14th General Conference on Weights and Measures, which aimed to standardize units for scientific accuracy and international communication.
Etymology: The term 'pascal' is derived from the name of Blaise Pascal, while 'second' refers to the time unit in the SI system.
Current Use
Today, the pascal second is widely used in various industries including chemical engineering, food processing, and materials science to characterize the flow properties of fluids. It is essential in applications involving lubrication, mixing, and fluid transport where understanding viscosity is crucial for efficiency and safety.
💡 Fun Facts
- •The pascal second is named after Blaise Pascal, who also has the unit of pressure named after him.
- •Dynamic viscosity can change with temperature; for example, heating honey makes it flow more easily.
- •The viscosity of air is significantly lower than that of most liquids, making it easier for objects to move through it.
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Picostokes
viscosity • Non-SI
Definition
The picostoke (symbol: pSt) is a unit of kinematic viscosity, defined as one trillionth (10^-12) of a stoke. The stoke itself is a measure of the internal friction of a fluid, representing the viscosity of a fluid in which a particle falls at a velocity of one centimeter per second under the influence of gravity. The picostoke is primarily used in scientific and engineering contexts where extremely low viscosities are relevant, particularly in fields like microfluidics and nanotechnology. This unit allows for the precise measurement of the behavior of fluids at very small scales, which is crucial for both theoretical and applied research in various scientific disciplines.
History & Origin
The concept of viscosity has ancient roots, but the division into smaller units like the stoke emerged with the development of fluid dynamics in the 19th century. The picostoke, being a subunit, was introduced in the later 20th century as scientific advancements allowed for the measurement of fluid properties at much smaller scales. As technologies progressed, particularly with the rise of microfluidics, the need for smaller units became apparent, leading to the adoption of the picostoke in various scientific literature and standards.
Etymology: The term 'stoke' is derived from the name of the British engineer Sir George Stokes, who made significant contributions to fluid mechanics, particularly with his work on the motion of viscous fluids. The prefix 'pico-' comes from the Spanish word 'pico,' meaning 'peak' or 'small,' and is a metric prefix denoting one trillionth (10^-12).
Current Use
Picostokes are used in cutting-edge scientific research and industrial applications where precise control over fluid properties is necessary. Industries such as pharmaceuticals, biotechnology, and materials science often utilize picostokes in their processes, particularly in scenarios involving micro-scale fluid dynamics. For instance, researchers in nanotechnology might measure the viscosity of fluids used in drug delivery systems, ensuring that the fluids behave predictably at the nano scale. Furthermore, picostokes can be used to analyze the rheological properties of new materials.
💡 Fun Facts
- •The stoke is named after Sir George Stokes, who formulated Stokes' Law regarding the motion of spheres through viscous fluids.
- •Picostokes are often used in high-tech applications, such as inkjet printing, where fluid behavior at small scales is crucial.
- •Despite being a very small unit, picostokes play a large role in advancing biomedical technologies, including targeted drug delivery systems.
📏 Real-World Examples
🔗 Related Units
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