Quick Answer: Magdeburg Hemispheres are two concave cups, 62 mm or 75 mm in diameter, fitted with a handle and stop cock, used to demonstrate the pressure of the atmosphere. They are available in brass and aluminium.
Last updated: October 2026
Key Features
Two concave cups
Diameter 62 mm or 75 mm
Fitted with handle and stop cock
Available in brass and aluminium
Demonstrates the pressure of the atmosphere
Technical Specifications
Specification
Value
Cups
Two, concave
Diameter
62 mm or 75 mm
Fittings
Handle and stop cock
Material
Brass or aluminium
About This Product
Used in the Properties of Matter lab to demonstrate the pressure of the atmosphere: air is removed from the joined cups through the stop cock, and the handles are then used to try to pull them apart.
Frequently Asked Questions
Q1. What sizes are the Magdeburg Hemispheres made in? The cups are 62 mm or 75 mm in diameter.
Q2. Which materials are available? Brass and aluminium.
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