I wanted to convert my findings to one of the traditional
units for viscosity, either centipoises or Pascal-seconds or
Slugs/foot second, or degrees
MacMichael so I found this formula to help.
It is a modified configuration of Stoke's Law. I found it on a University of Hawaii page, a University of Madison, Wisconson page and in other places. |
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The first viscosity I tried calculating was that of water.
I plugged my values for water in, including the density of the water, the density and the speed of the ball. |
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A little math... | ||

I converted the disparate units to centimeters, grams and seconds. | ||

I cancelled out some centimeters on the top. | ||

Close to an answer.
I got stuck at this point and consulted a real scientist & cockeyed.com supporter, John O'Meara at the Center for Astrophysics & Space Sciences at UCSD. He was operating without the benefit of Goldschlager, but coaxed me forward in my calculations. |
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Clearing more units. | ||

I arrived triumphantly at an answer! 1.095 g/cm-s or 0.1
kg/m-s. This is the correct format for an answer, but the well-documented
viscosity of water is actually .001 kg/m-s.
John arrived at the same numbers and was as perplexed as I am. I seem to be off by a factor of 100. I used this technique to calculate the incorrect viscosity for the eleven other liquids too. |

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Last updated March 9, 2003.