A single point viscosity measurement has been proven meaningless in determining the rheological and application properties of a paint. Paints having the same “one point“ viscosity can hove different settling, sag, and leveling properties. These rheological differences are graphically depicted by means of viscosity profiles obtained through the use of low and high shear rate viscometers. A metho...

1. The viscosity of sputum in patients with chronic bronchitis has been measured with the Weissenberg rheogoniometer, a cone and plate system, using oscillatory movement at low shear rates. 2. A characteristic pattern is described not previously reported for sputum or any other biological fluid. 3. Sputum viscosity decreased steadily with increasing shear rate; over a narrow range of shear rate...

In this paper, we apply two purely irrotational theories of the motion of a viscous fluid, namely, viscous potential flow (VPF) and the dissipation method to the problem of the decay of waves on the surface of a sphere. We treat the problem of the decay of small disturbances on a viscous drop surrounded by gas of negligible density and viscosity and a bubble immersed in a viscous liquid. The in...

[1] In-situ high pressure viscosity measurements, using synchrotron X-ray radiography, have been carried out on liquid Fe-S (8.5 wt.% S) at pressures up to 6 GPa and at 1823 K. Here we show that (i) the effect of pressure on the isothermal viscosity is substantial, with an apparent activation volume of 5.8 cm/mol; and (ii) viscosity is constant along the pressure dependent melting boundary. Ass...