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unit of measure: the base unit | the supplementary unit | the derived unit

*geometry: the area of a flat figure | the area of a solid | the volume of the solid*

The ** dynamic viscosity ** is the physical measure of the environment (oil, gas) internal friction coefficient of the environment (oil, gas) to cause internal friction resistance at mutual non-uniform movement of internal layers.

** 1 pascal second** equals the dynamic viscosity of the environment, the tangential stress for which at the laminar flow and speed differences, according to the normal of 1 meter per second of the layers situated at a distance of 1 meter, it is equal to 1 pascal.

system of units: | SI; |

statute: | derived unit; |

name the value: | η; |

unit name: | pascal second; |

symbol unit: | Pa·s; |

relationship of definition: | η = F/((dv/dl)·ΔS); |

dimension: | L^{-1} M T^{-1}; |

expression in other units: | lbf·s/ft², lbf·s/in²; |

from:

name | symbol | value in SI unit: Pa·s | note |

1 poise | P, Po | = 0.1 | |

1 poundal second per foot square | ≈ 1.488 164 | ||

1 pound-force per foot square | lbf·s/ft² | ≈ 47.880 26 | |

1 pound-force per inch square | lbf·s/in² | ≈ 6 894.757 | |

1 pound per foot hour | lb/(ft·h) | ≈ 4.13 378 9 × 10^{-4} | |

1 pound per foot second | lb/(ft·s) | ≈ 1.488 164 | |

1 slug per foot second | slug/(ft·s) | ≈ 47.880 26 |