stormer                package:Rnotes                R Documentation

_T_h_e _S_t_o_r_m_e_r _V_i_s_c_o_m_e_t_e_r _D_a_t_a

_D_e_s_c_r_i_p_t_i_o_n:

     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.

_D_e_t_a_i_l_s:

     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.

_V_a_l_u_e:

     The data frame contains the following components: 

Viscosity: Viscosity of fluid 

      Wt: Actuating weight 

    Time: Time taken 

_C_A_T_E_G_O_R_Y:

     Nonlinear regression, special regression.

_S_o_u_r_c_e:

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

