

stormer(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 revolu-
     tions 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 sus-
     pended 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

