microfabrication of circular cross
... Although previous groups have formulated methods for obtaining rounded channels such as reflow of photoresist during photolithography of the device mold, molding through the use of small wires, or by using additional coating hexanes within square channels, all of these methods have shown poor contro ...
... Although previous groups have formulated methods for obtaining rounded channels such as reflow of photoresist during photolithography of the device mold, molding through the use of small wires, or by using additional coating hexanes within square channels, all of these methods have shown poor contro ...
Millikan Oil Drop Experiment
... there is a problem and you have checked with the instructor. Place the end of the atomizer tube in the reservoir. Close the chamber and turn on the unit. Set the voltage to zero. A gentle squeeze of the bulb should inject some droplets into the region between the plates. You will see a bright flash ...
... there is a problem and you have checked with the instructor. Place the end of the atomizer tube in the reservoir. Close the chamber and turn on the unit. Set the voltage to zero. A gentle squeeze of the bulb should inject some droplets into the region between the plates. You will see a bright flash ...
The control of the viscosity of a suspension by the application
... magnetic field is able to exert a torque which results in the particles rotation. Recently, C. Rinaldi et al (2005) demonstrated the possibility of obtaining "negative viscosity" when the ferrofluid is placed in a cylindrical Couette geometry and subject to a uniform rotating field. In the present p ...
... magnetic field is able to exert a torque which results in the particles rotation. Recently, C. Rinaldi et al (2005) demonstrated the possibility of obtaining "negative viscosity" when the ferrofluid is placed in a cylindrical Couette geometry and subject to a uniform rotating field. In the present p ...
Viscometer
A viscometer (also called viscosimeter) is an instrument used to measure the viscosity of a fluid. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer is used. Viscometers only measure under one flow condition.In general, either the fluid remains stationary and an object moves through it, or the object is stationary and the fluid moves past it. The drag caused by relative motion of the fluid and a surface is a measure of the viscosity. The flow conditions must have a sufficiently small value of Reynolds number for there to be laminar flow.At 20.00 degrees Celsius the dynamic viscosity (kinematic viscosity x density) of water is 1.0038 mPa·s and its kinematic viscosity (product of flow time x Factor) is 1.0022 mm2/s. These values are used for calibrating certain types of viscometers.