Linear expansion apparatus Manufacturer,Supplier and Exporter in India
Product Code : SCL-MH-12792
The Linear Expansion Apparatus by Educational Instrument India is a practical physics laboratory instrument designed to demonstrate and study the linear expansion of solids when heated. It is commonly 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 behavior.
This apparatus allows students to observe how a metal rod increases in length when its temperature rises. By measuring the original length, rise in temperature, and change in length, students can understand the principle of linear expansion and calculate the coefficient of linear expansion of a material.
The Linear Expansion Apparatus is a useful teaching aid for connecting theoretical heat concepts with practical laboratory observations. It helps learners understand why expansion gaps are provided in railway tracks, bridges, pipelines, and metal structures.
Key Features
Designed for studying linear expansion of solids
Helps demonstrate expansion of metal rods on heating
Useful for determining coefficient of linear expansion
Suitable for heat and temperature experiments
Simple setup for classroom demonstrations
Supports practical observation and measurement
Durable construction for repeated laboratory use
Ideal for schools, colleges, STEM labs, and technical institutes
Product Specifications
|
Specification |
Details |
|
Product Name |
Linear Expansion Apparatus |
|
Brand |
Educational Instrument India |
|
Application |
Study of linear expansion of solids |
|
Use |
Physics laboratory experiments and classroom demonstrations |
|
Concepts Covered |
Heat, temperature, thermal expansion, linear expansion, coefficient of expansion |
|
Measurement Type |
Change in length due to heating |
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Suitable Materials |
Metal rods such as brass, copper, aluminium, steel, or supplied rods |
|
Operation |
Heating and measurement-based experiment |
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Components |
Base frame, metal rod, pointer or gauge arrangement, supports, heating arrangement, and accessories depending on model |
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Material |
Laboratory-grade metal and support components |
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Suitable For |
Schools, colleges, STEM laboratories, and technical institutes |
|
Category |
Physics Laboratory Equipment |
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Recommended Usage |
Under teacher or laboratory instructor supervision |
How to Use Linear Expansion Apparatus
Place the 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 experiment setup.
Measure and record the initial length of the rod at room temperature.
Note the initial temperature before heating.
Heat the rod carefully using the recommended heating source or steam arrangement.
Observe the movement of the pointer, gauge, or measuring device as the rod expands.
Record the final temperature and the 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 if required.
Allow the rod and apparatus to cool completely after the experiment.
Clean and store the apparatus safely after use.
Educational Importance
The Linear Expansion Apparatus is an important teaching tool for understanding thermal expansion in solid materials. It helps students clearly observe that solids expand when heated and contract when cooled. This practical demonstration makes heat and thermodynamics concepts easier to understand.
By using this apparatus, students develop skills in measurement, observation, calculation, data comparison, and scientific analysis. It also helps them understand real-life engineering applications where expansion and contraction of materials must be considered.
Applications
Study of linear expansion of solids
Determination of coefficient of linear expansion
Heat and temperature experiments
Thermal expansion demonstrations
Comparison of expansion in different metals
Physics practical classes
STEM laboratory activities
Engineering material property demonstrations
Classroom demonstrations of expansion and contraction
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 Linear Expansion Apparatus used for?
A 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 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 increases.
- Which 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 formula is used in the experiment?
The coefficient of linear expansion is calculated using: change in length divided by original length multiplied by rise in temperature.
- Why is linear expansion important in real life?
Linear expansion is important in railway tracks, bridges, pipelines, buildings, and metal structures because materials expand and contract with temperature changes.
- Is the Linear Expansion Apparatus reusable?
Yes, it is reusable when handled carefully, heated properly, cleaned after use, and stored safely.
