Determining the Velocity of Sound in Gases

The Velocity of Sound in Different Gases Experiment is designed to measure and compare the velocity of sound in carbon dioxide, helium, and neon. The experiment demonstrates how the speed of sound varies with the physical properties of different gases, particularly their density. Software-based data acquisition enables accurate measurement, analysis, and comparison of experimental results, helping students understand the relationship between sound propagation, gas density, and the adiabatic coefficient. Manufactured by Atico Export India.

Principle

The velocity of sound in a gas depends primarily on its density and adiabatic coefficient. In this experiment, the speed of sound is measured in carbon dioxide, helium, and neon using a controlled sound propagation setup. The experimental results show that the significant differences in sound velocity are mainly due to variations in gas density, while the differences in the adiabatic coefficients are comparatively small.

Objectives

• Measure the velocity of sound in carbon dioxide, helium, and neon.
• Compare the speed of sound in different gases.
• Study the influence of gas density on sound propagation.
• Understand the relationship between sound velocity and the adiabatic coefficient.
• Analyze experimental data using software-based measurement techniques.

System Components

Apparatus for Sound Velocity :

• Quantity: 1

Stand for Tubes and Coils :

• Quantity: 1

Tweeter :

• Quantity: 1

Multi-Purpose Microphone :

• Quantity: 1

Data Acquisition Interface :

• Quantity: 1

Data Analysis Software :

• Quantity: 1

Timer Box :

• Quantity: 1

Carbon Dioxide Gas Canister :

• Quantity: 1

Helium Gas Canister :

• Quantity: 1

Neon Gas Canister :

• Quantity: 1

Fine Regulating Valve :

• Quantity: 1

Silicone Tubing :

• Diameter: 7 mm
• Length: 1 m
• Quantity: 1

Rubber Tubing :

• Diameter: 4 mm
• Length: 1 m
• Quantity: 1

Tubing Connector :

• Size: 4 to 15 mm
• Quantity: 1

Saddle Base :

• Quantity: 2

Metal Rule :

• Length: 0.5 m
• Quantity: 1

Connecting Leads :

• Current Rating: 19 A
• Length: 25 cm
• Red/Blue Pair
• Quantity: 1

Connecting Leads :

• Current Rating: 19 A
• Length: 100 cm
• Red/Blue Pair
• Quantity: 1

Additional Requirement

Computer :

• Windows XP / Vista / 7 / 8 / 10 (x86 or x64)
• Required for data acquisition and analysis.

Software-Based Data Acquisition :

• Enables real-time measurement and analysis of sound propagation.

Accurate Sound Measurement :

• High-sensitivity microphone provides reliable detection of sound signals.

Stable Sound Source :

• Tweeter generates consistent sound waves for accurate measurements.

Gas Comparison Study :

• Supports experiments with carbon dioxide, helium, and neon.

Educational Design :

• Ideal for demonstrating the influence of gas properties on sound velocity.