2008-02-05

Viscosity of Water

The viscosity of water at room temperature is roughly 1 centipoise, or 1 cP. Gasoline has a viscosity between 0.4 and 0.5 cP; the viscosity of air is 0.018 cP.

cP (centipoise) = 10-2 poise = 10-3 Pa*second = 10-3 kg/m*s

poise = dyne * second / cm^2 = 10-1 Pa*sec = 10-1 N/m^2*s = kg/m*s
dyne = g * cm/ sec^2 = 1E-5 newton (kg*m/s^2)


cf.
http://www.ce.utexas.edu/prof/kinnas/319LAB/Book/CH1/PROPS/dynviscgif.html
http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch14/property.php#viscosity

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