Determination of Viscosity with the Falling Ball viscometer According to Höppler
When a substance (gas, liquid or solid) deforms, it opposes the change in form by a resistance which is generally referred to as its viscosity. If one liquid layer moves at constant speed in a direction parallel to a second layer, then a force friction acts between the two layers. The friction converts the energy of motion into heat. For this reason, the viscosity of a substance is a measure of the internal friction. The viscosity of a substance determines how well or poorly it flows in a pipe (e.g. blood through a vein) and how much resistance it exerts against a solid body moving in it.
Viscosity is highly temperature dependant. Experiment C126.96.36.199 studies the dependence of the viscosity on concentration in concentrated sugar solutions at room temperature.
|1||665 906||Höppler falling ball viscometer|
|1||313 07||Hand-held stop watch I, mechanical|
|1||666 7681||Circulation thermostat SC 100-S5P|
|2||667 194||Silicone tubing, 7 mm diam., 1 m|
|1||OHCS-200E||Electronic balance, CS200E|
|1||665 754||Measuring cylinder, 100 ml, with plastic base|
|1||664 138||Beaker, Boro3.3, 250 ml, tall|
|1||666 963||Spoon-ended spatula, stainless steel, 120 mm|
|1||674 6050||D(+)-Saccharose, 100 g|
|2||675 3410||Water, pure, 5 l|