stormer {Rnotes}R Documentation

The Stormer Viscometer Data

Description

The stormer viscometer measures the viscosity of a fluid by measuring the time taken for an inner cylinder in the mechanism to perform a fixed number of revolutions in response to an actuating weight.

Details

The viscometer is calibrated by measuring the time taken with varying weights while the mechanism is suspended in fluids of accurately known viscosity. The data comes from such a calibration, and theoretical considerations suggest a nonlinear relationship between time, weight and viscosity, of the form

Time = (B1*Viscosity)/(Weight - B2) + E

where B1 and B2 are unknown parameters to be estimated, and E is error.

Value

The data frame contains the following components:
Viscosity Viscosity of fluid
Wt Actuating weight
Time Time taken

CATEGORY

Nonlinear regression, special regression.

Source

E. J. Williams: "Regression Analysis", Wiley, 1959


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