Objective: Determine the dynamic viscosity of an aqueous solution of glycerine
Dynamic viscosity, the coefficient of proportionality between velocity gradient and sheer stress in a liquid, characterises how difficult it is for an object to flow through the liquid. This can be measured using a falling sphere viscosimeter of a type designed by Höppler. It is also possible to make temperature- independent measurements in conjunction with a circulation thermostat. Measurements are made in an experiment involving an aqueous solution of glycerine. This allows the way that viscosity depends on temperature to be described by the Andrade equation.
![Experiment: Falling sphere viscosimeter, Supplement, 8000574 [UE1080350S], Mechanics of Liquids and Gases](/imagelibrary/UE1080350S/UE1080350S_01_Experiment-Falling-sphere-viscosimeter-Supplement.jpg)
![Experiment: Falling sphere viscosimeter, Supplement, 8000574 [UE1080350S], Mechanics of Liquids and Gases](/thumblibrary/UE1080350S/UE1080350S_01_1200_1200_Experiment-Falling-sphere-viscosimeter-Supplement.jpg)
![Experiment: Falling sphere viscosimeter, Basic equipment (115 V, 50/60 Hz), 8000572 [UE1080350-115], Mechanics of Liquids and Gases](/thumblibrary/UE1080350-115/UE1080350-115_01_140_140_Experiment-Falling-sphere-viscosimeter-Basic-equipment-115-V-5060-Hz.jpg)
![Experiment: Falling sphere viscosimeter, Basic equipment (230 V, 50/60 Hz), 8000573 [UE1080350-230], Mechanics of Liquids and Gases](/thumblibrary/UE1080350-230/UE1080350-230_01_140_140_Experiment-Falling-sphere-viscosimeter-Basic-equipment-230-V-5060-Hz.jpg)
![Pocket Measuring Tape, 2 m, 1002603 [U10073], Measurement of Length](/thumblibrary/U10073/U10073_01_140_140_Pocket-Measuring-Tape-2-m.jpg)
![DC Power Supply,
0 – 20 V, 0 – 5 A, 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-0-20-V-0-5-A.jpg)
![Digital Stopwatch, 1002811 [U11902], Measurement of Time](/thumblibrary/U11902/U11902_01_140_140_Digital-Stopwatch.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![Tripod Stand 150 mm, 1002835 [U13270], Bases](/thumblibrary/U13270/U13270_01_140_140_Tripod-Stand-150-mm.jpg)
![Set of 15 Safety Experiment Leads, 75 cm, 2.5 mm², 1002843 [U138021], Franck-Hertz – Accessories](/thumblibrary/U138021/U138021_01_140_140_Set-of-15-Safety-Experiment-Leads-75-cm-25-mm.jpg)
![Set of 10 Beakers,600 ml, Low Form, 1002872 [U14210], Glassware](/thumblibrary/U14210/U14210_01_140_140_Set-of-10-Beakers-600-ml-Low-Form.jpg)
![Falling Sphere Viscometer, 1012827 [U14260], Mechanics of Liquids](/thumblibrary/U14260/U14260_01_140_140_Falling-Sphere-Viscometer.jpg)
![Precision Dynamometer 2 N, 1003105 [U20033], Dynamometers](/thumblibrary/U20033/U20033_01_140_140_Precision-Dynamometer-2-N.jpg)
![Vibration generator -
for investigating oscillations and resonances, 1000701 [U56001], Oscillations](/thumblibrary/U56001/U56001_01_140_140_Vibration-generator-for-investigating-oscillations-and-resonances.jpg)
![Height Measuring Ruler, 1 m, 1000743 [U8401560], Measurement of Length](/thumblibrary/U8401560/U8401560_01_140_140_Height-Measuring-Ruler-1-m.jpg)
![Optical Bench K, 1000 mm, 1009696 [U8475240], Optical System Kroencke – Accessories](/thumblibrary/U8475240/U8475240_01_140_140_Optical-Bench-K-1000-mm.jpg)
![Optical Rider K, 1000862 [U8475350], Optical System Kroencke – Accessories](/thumblibrary/U8475350/U8475350_01_140_140_Optical-Rider-K.jpg)
![Transformer,
12 V, 25 VA, 1000866 [U8475470-230], Power Supplies](/thumblibrary/U8475470-230/U8475470-230_01_140_140_Transformer-12-V-25-VA.jpg)
![Clamp K, 1008518 [U84755401], Optical System Kroencke – Accessories](/thumblibrary/U84755401/U84755401_01_140_140_Clamp-K.jpg)
![Projection Screen K, White, 1000879 [U8476320], Optical System Kroencke – Accessories](/thumblibrary/U8476320/U8476320_01_140_140_Projection-Screen-K-White.jpg)
![Flat Coil in a Rotatable Frame, 1013131 [U8496320], Induction](/thumblibrary/U8496320/U8496320_01_140_140_Flat-Coil-in-a-Rotatable-Frame.jpg)
![Experiment: Inclined Launch, 8000533 [UE1030400], Translational motions](/thumblibrary/UE1030400/UE1030400_01_140_140_Experiment-Inclined-Launch.jpg)
![Experiment: Mechanical waves (230 V, 50/60 Hz), 8000565 [UE1050700-230], Oscillations](/thumblibrary/UE1050700-230/UE1050700-230_01_140_140_Experiment-Mechanical-waves-230-V-5060-Hz.jpg)