Bell Experiment Apparatus Manufacturer,Supplier and Exporter in India
Product Code : ILS-POM-10867
Indian Lab Suppliers supplies the Bell Experiment Apparatus (Product ID: 10867) as part of its properties of matter range. It shows that sound cannot travel through a vacuum by pumping air out of a jar containing a ringing electric bell.
Quick Answer
An electric bell hangs inside a 2 litre bell jar from a rubber stopper fitted with binding posts and connectors. The bell runs on 3 to 6 V from a battery or a transformer. As air is removed with the Air Pump (Vacuum Pump with Aluminium Plate) (Product ID: 10866), the sound becomes fainter while the hammer can still be seen striking the gong. A small amount of sound is still carried by the leads and the remaining air, so it rarely disappears completely. Do not pump down a jar that is chipped or cracked.
Key Specifications
| Parameter | Detail |
|---|---|
| Bell jar | 2 litre, with rubber stopper |
| Connections | Binding posts and connectors in stopper |
| Bell supply | 3–6 V, battery or transformer |
| Used with | Air pump with aluminium plate |
Where This Is Used
Used in lessons on sound transmission and the need for a medium. See also Portable Diaphragm Type Vacuum Pump cum Air Compressor, Oil Free, Light Weight (Product ID: 10868) for a powered vacuum source. Browse the full Properties of Matter range or related Sound and Resonance products.
Frequently Asked Questions
What voltage does the bell need?
3 to 6 V from a battery or transformer.
Why can a faint sound still be heard?
The pump cannot remove all the air, and some sound travels through the suspension and leads.
Is a pump included?
It is meant to be used with the Air Pump (Vacuum Pump with Aluminium Plate).
Related Categories
Properties of Matter · Sound and Resonance · Physics Lab Equipment
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