Bell Experiment Apparatus Bell in Bell Jar Manufacturer,Supplier and Exporter in India
Product Code : EL-PLE-10846
Quick Answer: The Bell Experiment Apparatus (Bell in Bell Jar) demonstrates that sound cannot be transmitted in a vacuum. It has a 2 litre bell jar with a rubber stopper fitted with binding posts and connectors, from which an electric bell is suspended, and operates on 3 to 6 volts from a battery or transformer.
Last updated: October 2026
Key Features
- Demonstrates that sound cannot be transmitted in a vacuum
- Bell jar of 2 litre capacity
- Rubber stopper fitted with binding posts and connectors
- Electric bell suspended from the stopper
- Operates on 3 to 6 volts, using a battery or a transformer
- To be used with the Air Pump (vacuum pump with aluminium plate)
Technical Specifications
| Specification | Value |
|---|---|
| Bell jar | 2 litre |
| Stopper | Rubber, fitted with binding posts and connectors |
| Bell | Electric, suspended from the stopper |
| Operating voltage | 3 to 6 volts, battery or transformer |
| Used with | Air Pump (vacuum pump with aluminium plate) |
About This Product
A ringing electric bell is sealed in a jar and the air is pumped out. As the air thins, the sound fades even though the hammer can still be seen striking the gong, which shows that sound needs a material medium to travel. An air pump is connected to remove the air from the jar. The experiment is a standard part of school lessons on sound.
Frequently Asked Questions
Q1. What does the Bell Experiment Apparatus demonstrate?
It demonstrates that sound cannot be transmitted in a vacuum.
Q2. What supply does the bell need?
It operates on 3 to 6 volts, using either a battery or a transformer.
Q3. What else is needed to run the experiment?
It is to be used with an Air Pump (vacuum pump with aluminium plate) to remove the air from the 2 litre bell jar.
Related: Physics Lab Equipment, Air Pump, Portable Diaphragm Type Vacuum Pump, Magdeburg Hemisphere.
For a quotation on the Bell Experiment Apparatus (Bell in Bell Jar), contact School Lab Equipment India.