Thermal Expansion Experiment Optical Interference for Heat Physics Lab

This Thermal Expansion Experiment Optical Interference for Heat Physics Lab is designed for the precise study of thermal expansion in solid materials using optical interference techniques. The apparatus employs a Michelson interferometer and a He-Ne laser to detect extremely small dimensional changes caused by temperature variations. By observing and counting interference fringe movements, users can accurately determine the linear thermal expansion coefficients of different metallic specimens. The system incorporates a temperature-controlled heating chamber and precision temperature measurement, providing stable experimental conditions for high-accuracy thermal expansion studies. It serves as an excellent platform for thermal physics, optics, and material characterization experiments.

Physics Lab Experiments from Atico Exports.

Experimental Principle and Content

• Study the Principle of Optical Interference
• Investigate the Operation of a Michelson Interferometer
• Measure Thermal Expansion of Metallic Specimens
• Determine the Linear Thermal Expansion Coefficient of Copper
• Determine the Linear Thermal Expansion Coefficient of Aluminum
• Determine the Linear Thermal Expansion Coefficient of Steel
• Analyze the Relationship Between Temperature Change and Material Expansion
• Measure Displacement Using Interference Fringe Counting

Educational Objectives

• Understand the Principles of Thermal Expansion
• Learn Optical Interference Measurement Techniques
• Study the Operation of Michelson Interferometers
• Develop Skills in Precision Measurement and Data Analysis
• Compare the Thermal Expansion Properties of Different Materials
• Gain Practical Experience in Thermal Physics and Material Characterization

He-Ne Laser :

• Output Power: 1.5 mW
• Wavelength: 632.8 nm

Experimental Specimens :

• Copper
• Aluminum
• Steel

Specimen Length :

• 150 mm

Heating System :

• Temperature-Controlled Chamber
• Heating Range: 18°C to 60°C

Temperature Measurement Accuracy :

• 0.1°C

Display Error :

• ±1%

Power Consumption :

• 50 W

Linear Expansion Coefficient Measurement Error :

• Less Than 3%

Standard Supply

• Thermal Expansion Experiment Unit × 1
• He-Ne Laser × 1
• Plane Mirrors × 2
• Power Cable × 1
• Lift Tool × 1
• Manual Counter × 1
• Aluminum Specimen × 1
• Copper Specimen × 1
• Steel Specimen × 1
• Instruction Manual × 1

• Compact Structure
• Multiple Specimen Types Included
• Low Power Consumption
• High Measurement Accuracy