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Magdeburg Hemisphere
Magdeburg Hemisphere (Product Code: SLE/PHY/235) is a brass hemisphere apparatus used to demonstrate the existence of atmospheric pressure in school and college physics lessons. It has a diameter of 75 mm and is fitted with a stopcock and handle, so air can be drawn out and the halves then resist being pulled apart. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India, as educational physics lab equipment.
Specifications
| Parameter | Detail |
|---|---|
| Purpose | Demonstrating the existence of atmospheric pressure |
| Diameter | 75 mm |
| Material | Brass |
| Fittings | Stopcock and handle |
| Evacuation | Through the stopcock with a vacuum pump (listed separately) |
| Product code | SLE/PHY/235 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Magdeburg Hemisphere Used For?
This apparatus recreates, on a bench scale, the famous 17th-century demonstration by Otto von Guericke in the town of Magdeburg. Wipe the rims clean and apply a thin film of vacuum grease, press the two halves together, and connect the stopcock to a vacuum pump. After pumping, close the stopcock and disconnect the pump: students will find the hemispheres very hard to separate, even though nothing seems to be holding them.
The explanation is that air outside pushes on the whole surface of the sphere, while there is very little air left inside to push back. Opening the stopcock lets air rush in and the halves come apart easily, which makes the role of atmospheric pressure obvious. Keep the rims free of dents and grit, and store the brass hemispheres dry so they continue to seal well between demonstrations.
What to Specify When Ordering
- The version: this brass 75 mm set with stopcock, or the larger plastic model with wooden handles.
- Whether a hand or electric vacuum pump and tubing should be quoted with it.
- The number of sets for demonstration or group practicals.
OEM Manufacturer
Jain Scientific Equipments Private Limited, which trades as ScienceLab, is the OEM (original equipment manufacturer) of this brass Magdeburg Hemisphere and makes it at its own licensed factory at Saha, Ambala, Haryana. The company is a registered MSME enterprise with manufacturing as its major activity (Udyam UDYAM-HR-01-0003714), and its export shipments are handled under Importer-Exporter Code AAECJ8618A (DGFT). Schools, colleges, dealers and importers buy directly from the maker, and repeat orders or replacement parts can be discussed with us at any time. See the ScienceLab company profile for more.
Related Physics Lab Equipment
Items needed or useful for air-pressure demonstrations:
- Magdeburg Hemisphere, Plastic — a larger plastic model with wooden handles.
- Vacuum Pump, Hand — a lightweight hand pump for evacuating the hemispheres.
- Vacuum Pump, Electric — a rotary pump for quicker evacuation.
- Vacuum Tubing — for connecting the stopcock to the pump.
- Bell In Glass Jar and Base — another vacuum demonstration using the same pumps.
Browse the full Physics Lab Equipment range.
Frequently Asked Questions
What does the Magdeburg Hemisphere demonstrate?
The Magdeburg Hemisphere demonstrates the existence of atmospheric pressure. Once air is pumped out through the stopcock, the pressure of the surrounding air holds the two brass halves together so firmly that students struggle to pull them apart.
What size and material is the Magdeburg Hemisphere?
This Magdeburg Hemisphere is made of brass with a diameter of 75 mm, and it is fitted with a stopcock and handle. A larger plastic model with wooden handles is also listed for schools that prefer a lighter version.
Is a vacuum pump needed with the Magdeburg Hemisphere?
Yes, a vacuum pump is needed to remove air through the stopcock of the Magdeburg Hemisphere. Hand and electric vacuum pumps are listed separately; ask us through the contact page to quote a pump and tubing with the hemispheres.
Who manufactures the Magdeburg Hemisphere?
The Magdeburg Hemisphere is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Quotations, repeat orders and replacement parts come directly from the manufacturer.
How should the Magdeburg Hemisphere be looked after?
Keep the rims of the Magdeburg Hemisphere clean and undamaged, use a thin film of vacuum grease when demonstrating, and store the brass parts dry. Leaving the stopcock slightly open during storage prevents the halves from sticking together between lessons.
Can the Magdeburg Hemisphere be supplied in bulk or for export?
Yes, the Magdeburg Hemisphere can be supplied in quantity to schools, institutions, dealers and importers in India and international markets. Include quantities and delivery location in your enquiry, and the quotation will come straight from the manufacturer.
Request a Quote
For the brass Magdeburg Hemisphere (SLE/PHY/235), request a factory-direct price through the ScienceLab contact page or add it to the enquiry cart with any pump you need.
Last updated: 24 September 2026
