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)
![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 20 V, 5 A
(230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Projectile Launcher, 1002654 [U10360], Oblique throw](/thumblibrary/U10360/U10360_01_140_140_Projectile-Launcher.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)
![Graduated Cylinder, 100 ml, 1002870 [U14205], Glassware](/thumblibrary/U14205/U14205_01_140_140_Graduated-Cylinder-100-ml.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)
![Immersion/Circulation Thermostat (230 V; 50/60 Hz), 1008654 [U144002-230], Gas Laws](/thumblibrary/U144002-230/U144002-230_01_140_140_ImmersionCirculation-Thermostat-230-V-5060-Hz.jpg)
![Stainless Steel Rod 750 mm, 1002935 [U15003], Stainless Steel Rod](/thumblibrary/U15003/U15003_01_140_140_Stainless-Steel-Rod-750-mm.jpg)
![Set of 10 Tracing Compasses, 1003095 [U19562], Magnetic Fields](/thumblibrary/U19562/U19562_01_140_140_Set-of-10-Tracing-Compasses.jpg)
![Accessories for Spring Oscillations, 1000703 [U56003], Mechanical Waves](/thumblibrary/U56003/U56003_01_140_140_Accessories-for-Spring-Oscillations.jpg)
![Height Measuring Ruler, 1 m, 1000743 [U8401560], Measurement of Length](/thumblibrary/U8401560/U8401560_01_140_140_Height-Measuring-Ruler-1-m.jpg)
![Clamp K, 1008518 [U84755401], Kröncke Optics](/thumblibrary/U84755401/U84755401_01_140_140_Clamp-K.jpg)
![Projection Screen K, White, 1000879 [U8476320], Kröncke Optics](/thumblibrary/U8476320/U8476320_01_140_140_Projection-Screen-K-White.jpg)
![Glycerine, 1007027 [U8496816], Consumables](/thumblibrary/U8496816/U8496816_01_140_140_Glycerine.jpg)
![Pair of Clamps D, 1000977 [U8497181], Demountable Transformer D](/thumblibrary/U8497181/U8497181_01_140_140_Pair-of-Clamps-D.jpg)
![U Core D, 1000979 [U8497215], Demountable Transformer D](/thumblibrary/U8497215/U8497215_01_140_140_U-Core-D.jpg)
![Accessories for Rope Waves, 1008540 [U85560081], Mechanical Waves](/thumblibrary/U85560081/U85560081_01_140_140_Accessories-for-Rope-Waves.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)