Pascal Second Converter
Convert Pascal Second to Attostokes 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.
AttostokesaSt
Target UnitAn attostokes (aSt) is a unit of dynamic viscosity that is equal to 10^-18 stokes. It measures the resistance of a fluid to flow, specifically in terms of the force required to move one layer of fluid over another. The stokes (St) is defined as the viscosity of a fluid in which a force of one dyne per square centimeter causes a velocity of one centimeter per second. The attostokes, as a subunit, allows for the measurement of extremely low viscosities that are relevant in fields such as nanotechnology and molecular biology.
Current Use
Attostokes is primarily used in specialized areas of science and engineering, particularly where very low viscosities are important, such as in the study of biological fluids, nanofluids, and in the development of new materials. As nanotechnology advances, the ability to measure viscosity accurately at this scale becomes crucial for innovation in various fields.
Fun Fact
The attostokes allows scientists to measure viscosities that are a million times lower than those commonly encountered in everyday fluids.
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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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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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Attostokes
viscosity • Non-SI
Definition
An attostokes (aSt) is a unit of dynamic viscosity that is equal to 10^-18 stokes. It measures the resistance of a fluid to flow, specifically in terms of the force required to move one layer of fluid over another. The stokes (St) is defined as the viscosity of a fluid in which a force of one dyne per square centimeter causes a velocity of one centimeter per second. The attostokes, as a subunit, allows for the measurement of extremely low viscosities that are relevant in fields such as nanotechnology and molecular biology.
History & Origin
The concept of viscosity dates back to the early scientific inquiries into fluid mechanics in the 17th century. The stokes was first introduced in 1851 by Sir George Gabriel Stokes to quantify the viscosity of fluids. The prefix 'atto-' was later adopted in the late 20th century to denote one quintillionth (10^-18), allowing for the measurement of extremely low viscosity fluids, particularly in modern scientific applications.
Etymology: The term 'attostokes' derives from the prefix 'atto-' which is from the Danish word 'atten' meaning 'eighteen', combined with 'stokes', named after the physicist George Gabriel Stokes.
Current Use
Attostokes is primarily used in specialized areas of science and engineering, particularly where very low viscosities are important, such as in the study of biological fluids, nanofluids, and in the development of new materials. As nanotechnology advances, the ability to measure viscosity accurately at this scale becomes crucial for innovation in various fields.
💡 Fun Facts
- •The attostokes allows scientists to measure viscosities that are a million times lower than those commonly encountered in everyday fluids.
- •Research has shown that some biological fluids can have viscosities in the range of attostokes, which is critical for understanding cellular processes.
- •The prefix 'atto-' comes from the Danish word for eighteen, indicating the exponential scale of measurements in the metric system.
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