Precision linear expansion apparatus
Product Code : SCL-MH-12791
The Precision Linear Expansion Apparatus by Educational Instrument India is a high-quality physics laboratory instrument designed to study the linear expansion of solids when heated. It is widely used in school physics laboratories, college laboratories, STEM classrooms, and technical institutes for experiments related to heat, temperature, thermal expansion, coefficient of linear expansion, and material properties.
This apparatus helps students observe and measure the small increase in length of a metal rod due to heating. By using different metal rods and measuring the change in length for a known temperature rise, students can determine and compare the coefficient of linear expansion of various materials.
The Precision Linear Expansion Apparatus provides accurate and practical learning for topics in heat and thermodynamics. It is an excellent teaching aid for demonstrating how solids expand on heating and contract on cooling, and it helps connect classroom theory with real-life applications in engineering, construction, railway tracks, bridges, pipelines, and metal structures.
Key Features
Designed for accurate study of linear expansion of solids
Helps determine coefficient of linear expansion
Suitable for heat, temperature, and thermodynamics experiments
Allows comparison of expansion in different metal rods
Clear measurement of small length changes
Durable laboratory-grade construction
Ideal for school, college, STEM, and technical laboratories
Supports practical and observation-based learning
Product Specifications
|
Specification |
Details |
|
Product Name |
Precision Linear Expansion Apparatus |
|
Brand |
Educational Instrument India |
|
Application |
Study of linear expansion of solids |
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Use |
Physics laboratory experiments and classroom demonstrations |
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Concepts Covered |
Heat, temperature, thermal expansion, linear expansion, coefficient of expansion |
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Measurement Type |
Change in length due to heating |
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Suitable Materials |
Metal rods such as brass, copper, aluminium, steel, or other supplied rods |
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Operation |
Heating and measurement-based experiment |
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Components |
Expansion base, metal rod, pointer/dial gauge arrangement, heating source connection, supports, and accessories depending on model |
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Material |
Durable laboratory-grade metal and support components |
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Suitable For |
Schools, colleges, STEM laboratories, and technical institutes |
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Category |
Physics Laboratory Equipment |
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Recommended Usage |
Under teacher or laboratory instructor supervision |
How to Use Precision Linear Expansion Apparatus
Place the Precision Linear Expansion Apparatus on a stable laboratory table.
Select the metal rod required for the experiment.
Fix the rod securely in the apparatus according to the setup instructions.
Measure and record the initial length of the rod at room temperature.
Note the initial temperature of the rod.
Apply heat carefully using the recommended heating arrangement or steam heating setup, depending on the model.
Observe the movement of the pointer, dial gauge, or measuring device as the rod expands.
Record the final temperature and change in length.
Calculate the coefficient of linear expansion using the formula: coefficient of linear expansion = change in length / original length × rise in temperature.
Repeat the experiment with different rods to compare expansion of different materials.
After the experiment, allow the apparatus and rod to cool completely before handling.
Clean and store all components properly after use.
Educational Importance
The Precision Linear Expansion Apparatus is an important teaching aid for understanding thermal expansion in solids. It helps students practically observe that solids expand when heated and contract when cooled. The apparatus also allows learners to measure small changes in length and calculate the coefficient of linear expansion.
This experiment develops important scientific skills such as observation, measurement, data recording, calculation, comparison, and analysis. It also helps students understand why engineers provide expansion gaps in bridges, railway tracks, pipelines, and building structures.
Applications
Study of linear expansion of solids
Determination of coefficient of linear expansion
Heat and temperature experiments
Thermodynamics practicals
Comparison of expansion in different metals
Physics classroom demonstrations
STEM laboratory activities
Engineering material property demonstrations
Practical study of expansion in metal rods
Safety Instructions
Use the apparatus only under teacher or laboratory supervision.
Handle heated rods carefully to avoid burns.
Do not touch metal parts immediately after heating.
Use tongs, clamps, or heat-resistant gloves when required.
Keep flammable materials away from the heat source.
Do not overheat the rod beyond the recommended limit.
Allow the apparatus to cool completely before storage.
Store the apparatus in a clean and dry place after use.
Frequently Asked Questions
- What is a Precision Linear Expansion Apparatus used for?
A Precision Linear Expansion Apparatus is used to study the expansion of solid materials when heated and to determine the coefficient of linear expansion.
- Is this apparatus suitable for school laboratories?
Yes, the Precision Linear Expansion Apparatus by Educational Instrument India is suitable for school physics labs, college laboratories, STEM classrooms, and technical institutes.
- What is linear expansion?
Linear expansion is the increase in length of a solid material when its temperature rises.
- What materials can be tested with this apparatus?
Depending on the model, metal rods such as brass, copper, aluminium, steel, or other supplied rods can be used.
- What concepts can be taught using this apparatus?
Teachers can explain heat, temperature, thermal expansion, linear expansion, coefficient of expansion, and material behavior under heating.
- Why is linear expansion important in real life?
Linear expansion is important in bridges, railway tracks, pipelines, buildings, and metal structures because materials expand and contract with temperature changes.
- Is the Precision Linear Expansion Apparatus reusable?
Yes, it is reusable when handled carefully, heated properly, cleaned after use, and stored safely.
