Determining the Velocity of Sound in Air as a Function of the Temperature

The Velocity of Sound in Air as a Function of Temperature apparatus is designed to investigate how the velocity of sound varies with air temperature. The experiment enables students to measure the speed of sound at different temperatures, analyze the relationship between temperature and sound velocity, and determine the adiabatic coefficient of air using experimental data. Software-based data acquisition provides accurate measurement, analysis, and graphical representation of the results. Manufactured by Atico Export India.

Principle

The velocity of sound in air depends on the temperature of the medium. As the air temperature increases, the speed of sound also increases due to changes in air pressure and density. In this experiment, the sound velocity is measured at different temperatures and compared with the theoretical linear relationship. Using the experimentally determined value of the sound velocity at 0°C along with the standard values of air pressure and density, the adiabatic coefficient of air can be calculated.

Objectives

• Determine the velocity of sound in air at different temperatures.
• Study the relationship between air temperature and sound velocity.
• Compare experimental results with the theoretical temperature dependence.
• Determine the adiabatic coefficient of air.
• Analyze sound propagation using software-based data acquisition.

Additional Requirement

Computer :

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

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

Type K Adapter :

• Quantity: 1

Type K Temperature Probe :

• Diameter: 1.5 mm
• Quantity: 1

Transformer :

• Output: 2 to 12 V
• Power: 120 W
• 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: 2

Software-Based Data Acquisition :

• Enables real-time measurement and analysis of experimental data.

Accurate Temperature Measurement :

• Type K temperature probe provides precise air temperature readings.

High-Sensitivity Sound Detection :

• Multi-purpose microphone ensures accurate sound signal detection.

Stable Sound Source :

• Tweeter generates consistent sound waves for reliable measurements.

Graphical Analysis :

• Software allows plotting and comparison of experimental and theoretical results.