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Magdebur Hemisphere

Magdebur Hemisphere

Product Code : SCL-PLE-11822

Quick Answer: The Magdebur Hemisphere is a pair of Magdeburg hemispheres, 100 mm to 125 mm in diameter, used to show the force of atmospheric pressure once the air inside is pumped out. A rubber gasket seals the rims and a chrome-plated brass stopcock with a serrated hose nozzle connects the vacuum pump.

Last updated: October 2026

Key Features

  • Cast iron or aluminium alloy hemispheres
  • Powder coated finish
  • Rubber gasket seal between the rims
  • Chrome-plated brass stopcock with serrated hose nozzle
  • Heavy-duty handles for pull tests
  • Diameter 100 mm to 125 mm (nominal)

Technical Specifications

SpecificationValue
MaterialCast iron or aluminium alloy
FinishPowder coating
SealRubber gasket
ValveChrome-plated brass stopcock, serrated hose nozzle
Diameter100 mm to 125 mm (nominal)
HS Code9023.00.90

About This Product

After the hemispheres are joined and evacuated with a vacuum pump, students find they cannot pull them apart by hand, and they separate easily once air is let back in through the stopcock. The demonstration makes the size of atmospheric pressure tangible and leads into calculations of force from pressure and area.

Frequently Asked Questions

How is air removed from the Magdebur Hemisphere?

A vacuum pump is connected by hose to the serrated nozzle of the chrome-plated brass stopcock, which is closed to hold the vacuum.

Related: Physics Lab Equipment.

For a quotation on the Magdebur Hemisphere, contact Educational Instrument.

   
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