scrilla103

Okay, I've decided to use the tube viscometer in which a liquid drains through an opening. After experimenting I am still stuck on where to plug the measurements in. I am measuring in Pascal seconds (Pascal = Newton per meter squared; Newton = Kilogram meter per second squared), thus {Kilogram}{Meter/Second^2}/{Meter^2}. I used a simple bottle and cut off the bottom for relative testing to see if I was on the right track; apparently I am not. I used .5 Kg and multiplied by the force of Gravity (9.80m/s^2); then I divided by the area of the opening of the bottle (diameter-.015 Meters^2 X Pi = .000707...); the relative time was between .5 and 2 seconds. In the end the final measurement is no where near the value I acquired online (.001003 Pa S) My assignment of values to the unit were as such: Kg-Mass of liquid; (m)/(s^2)- gravity; m^2- area of opening where liquid drains; s-time in seconds for drain. Any ideas?

Viscosity is measured in SI units labeled: kg/m s (kilogram per meter second). Can anyone clarify what each separate unit would represent. All I can get think of is how much the liquid resists movement; so does this unit represent the force that it resists with? Any help would be appreciated.

Think of it this way: a "solid" is a liquid with a very high viscosity. It is flowing but at a very slow rate in comparison to say water or corn syrup. A solid would be something that "pushes back" at an exerted force with an equal (or almost equal) amount of force, while a liquid would not. Thus it flows. Hope that helped.

Hello everybody, I am currently working on a science project and have reached the point where I need to measure viscosity of various fluids to a point of acceptable accuracy. For this I need to construct or buy a viscometer to do this. Does anybody have any suggestions on what type I should construct/buy. Note: I do not intend to spend a lot of money on this device unless necessary. Thanks for the help.