Measuring Liquid Viscosity Falling Sphere Method Lab Experiments

This apparatus is designed for measuring the viscosity coefficient of liquids using the falling ball method based on Stokes’ Law. It utilizes a laser photoelectric timing system for highly accurate measurement of falling time and enables the study of factors affecting viscosity measurements. Physics Lab Experiments from Atico Exports.

Experiments:

1. Laser Photoelectric Timing and Velocity Measurement

• Learn the operating principle of laser photoelectric sensors
• Measure transit time and velocity accurately
• Understand electronic timing techniques used in experimental physics

2. Viscosity Measurement Using Stokes’ Law

• Determine the viscosity coefficient of liquids using the falling ball method
• Apply Stokes’ Law to analyze viscous drag forces
• Calculate liquid viscosity from measured fall times

3. Experimental Conditions and Correction Analysis

• Observe the conditions required for valid Stokes’ Law measurements
• Investigate sources of experimental error
• Apply necessary correction factors for accurate viscosity determination

4. Effect of Steel Ball Diameter

• Study the influence of ball diameter on falling velocity
• Compare measurement results obtained with different ball sizes
• Analyze the relationship between sphere size and viscous drag

• Viscosity Coefficient Measurements
• Stokes’ Law Verification
• Fluid Mechanics Experiments
• Viscous Drag Investigations
• Transport Phenomena Studies
• Physics and Engineering Laboratory Education

Steel Balls

• Diameter: 2.8 mm
• Diameter: 2.0 mm

Laser Photoelectric Timer

• Measuring Range: 99.9999 s
• Resolution: 0.0001 s
• Includes Photoelectric Gate Position Calibration Indicator

Liquid Cylinder

• Capacity: 1000 ml
• Height: Approximately 50 cm

Measurement Accuracy

• Liquid Viscosity Coefficient Error: Less than 3%

• Laser photoelectric gate timing for high-precision time measurement
• Photoelectric gate position calibration indicator for accurate alignment
• Dedicated start button to minimize timing errors
• Improved falling ball guide with 2.9 mm inner diameter
• Adjustable ball alignment mechanism for reliable passage through the laser beam
• Supports smaller steel balls to increase fall duration and improve measurement precision
• High-Precision Laser Photoelectric Timing System
• Excellent Time Resolution of 0.0001 s
• Adjustable Alignment for Improved Measurement Reliability
• Supports Comparative Studies with Multiple Ball Diameters
• Low Measurement Error (<3%)
• Simple, Accurate, and Educational Experimental Design