Metal Expansion Teaching Apparatus
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Product Code : SCL-H-11244
The Metal Expansion Teaching Apparatus is a physics demonstration instrument used to show that a solid metal expands when heated and contracts when cooled. It is intended for schools, colleges, STEM laboratories and physics teachers who need a direct visual method for explaining thermal expansion in solids.
Product Description
The apparatus uses a metal bar mounted on a supporting rod with an insulated handle. A separate U-shaped metal gauge is also mounted on an insulated handle. Before heating, the bar can be tested against the gauge to establish its initial fit.
When the metal bar is heated, its dimensions increase slightly and the change can be demonstrated using the gauge. After cooling, the bar contracts towards its original dimensions. The apparatus is part of the heat and thermal physics equipment range for classroom demonstrations and supervised practical work.
Key Features
- Clear thermal-expansion demonstration: Shows dimensional change in a solid metal after heating.
- Contraction observation: Demonstrates that the metal returns towards its original dimensions when cooled.
- Insulated handles: The bar and gauge are mounted on insulated handles for controlled handling.
- U-shaped comparison gauge: Provides a simple reference for checking the heated metal bar.
- Reusable teaching apparatus: Suitable for repeated teacher demonstrations when handled correctly.
- No measurement calculation required: Provides a qualitative visual demonstration rather than a precision coefficient measurement.
- Compact laboratory format: Suitable for storage with other school physics heat apparatus.
Technical Specifications
|
Specification |
Detail |
|
Product name |
Metal Expansion Teaching Apparatus |
|
Closest catalogue model |
Bar and Gauze Apparatus Aluminium |
|
Demonstrated principle |
Expansion of a solid by heating and contraction by cooling |
|
Main components |
Metal bar and U-shaped metal gauge |
|
Handling arrangement |
Insulated handle on each component |
|
Bar material |
Aluminium for the closest verified catalogue model |
|
Standards or certification |
No product-specific certification verified |
What’s Included in the Kit
- One metal bar mounted on a rod
- One insulated handle for the metal bar
- One U-shaped metal comparison gauge
- One insulated handle for the gauge
A burner, heating stand, heat-resistant mat and protective equipment are not confirmed as included components.
Applications / Uses
- Demonstrating expansion of solids during heating
- Showing contraction of metals during cooling
- Introducing thermal expansion in school physics lessons
- Explaining expansion gaps in bridges, rails and metal structures
- Comparing qualitative expansion with the Linear Expansion Apparatus
- Supporting heat experiments within a complete physics laboratory equipment setup
How to Use the Metal Expansion Teaching Apparatus
- Place the apparatus on a heat-resistant laboratory surface.
- Check the unheated metal bar against the U-shaped gauge.
- Hold the bar only by its insulated handle.
- Heat the metal section evenly using an approved laboratory heat source.
- Remove the bar from the heat and test it carefully against the gauge.
- Observe the change in fit caused by thermal expansion.
- Allow the bar to cool completely and repeat the comparison.
Safety note: The metal bar remains hot after heating. Use eye protection, keep hands away from the heated section and place the apparatus on a heat-resistant surface while it cools.
Care & Maintenance
- Allow all components to cool fully before storage.
- Keep the bar and gauge clean, dry and free from corrosion.
- Do not bend the gauge or strike the heated bar against it.
- Inspect the insulated handles before every demonstration.
Why Choose Lab Equipments Ambala
Lab Equipments Ambala manufactures and exports scientific and educational laboratory equipment from Ambala, India. Its heat laboratory range includes classroom demonstration apparatus and quantitative thermal experiment equipment. The company supplies schools, colleges, universities and technical institutions. Buyers should confirm the material, dimensions, heating method and final packing list before ordering.
Frequently Asked Questions
What does the Metal Expansion Teaching Apparatus demonstrate?
It demonstrates that a solid metal expands when heated and contracts when cooled.
How is the expansion made visible?
The metal bar is checked against a U-shaped gauge before and after heating. The change in fit demonstrates thermal expansion.
Is this a quantitative measuring apparatus?
No. This model is primarily a qualitative teaching demonstrator. Use a precision metal linear expansion instrument when numerical measurement is required.
Does the apparatus include a heat source?
No heat source is confirmed as included. Buyers should verify the complete packing list and approved heating method.
Why are insulated handles provided?
The insulated handles help the demonstrator control the apparatus while keeping their hands away from the heated metal sections.
Can students use the apparatus?
Students may observe or use it only under trained adult supervision because the experiment involves heated metal.
Request the confirmed dimensions and packing details for the metal bar and gauge expansion apparatus, or browse the complete heat laboratory equipment category for related thermal physics instruments.
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