What are the correct amounts of relative humidity for a. The viscosity of water decreases smoothly from the freezing point while the density remains essentially constant except for the small maximum in density near 4☌. Pressure, temperature, density, viscosity and speed of sound variation for the international standard atmosphere (ISA) can be calculated for a range of altitudes from sea level upward. One can now appoint the density as 1,20 kg/m3 and there will be about 7,3 g of water per kg of air. In cgs units the unit is called the centistoke. The kinematic viscosity is the dynamic viscosity divided by the density of the fluid. The below tables provide the dynamic viscosity, the kinematic viscosity and the density of water at different temperatures. If the object floats on water, it means the density of the object is. The results for density, absolute viscosi- ty, kinematic viscosity, vapour pressure, and their sensitivity coefficients for temperature are presented in Figure. The unit centiPoise = 0.001 Pa s and is is sometimes written mPa s. It basically depends on how closely the atoms are spaced in a particular object or liquid. These viscosities are at 20☌ except for the blood and blood plasma which are at body temperature, 37☌, and for steam which is at 100☌. The Poise is used in the table because of its more common usage.
More commonly used is the dyne sec/cm 2 which is called Poise. Viscosity has the SI units Pascal seconds (Pa s) which is called the Poiseuille. Viscosity of Liquids and Gases Viscosity of Liquids and Gases Liquids
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