Cartesian devil Manufacturer,Supplier and Exporter in India
Product Code : SCL-MH-12725
Quick Answer: The Cartesian Devil, also called a Cartesian diver, is a small figure in a sealed, water-filled transparent container that sinks when the container is squeezed and rises again when the pressure is released.
Last updated: October 2026
Key Features
- Diver figure floats near the surface at rest
- Sinks as pressure on the sealed container increases
- Rises again when the pressure is released
- Shows buoyancy, density and the compressibility of air
Technical Specifications
| Specification | Value |
|---|---|
| Also known as | Cartesian Diver Apparatus |
| Use | How pressure changes affect floating and sinking |
| Operation | Manual pressure-based demonstration |
| Learning concepts | Buoyant force, density, pressure transmission, air compression, floating, sinking, Archimedes’ and Pascal’s principles |
About This Product
Squeezing the container raises the pressure in the water, which compresses the air trapped inside the diver, increases its density and makes it sink. Releasing the pressure lets the air expand so the diver rises, a simple way to explain Archimedes’ and Pascal’s principles and how submarines control their buoyancy.
Frequently Asked Questions
Why does the Cartesian Devil sink when the container is squeezed?
The extra pressure compresses the air trapped inside the diver, so its density rises above that of the water and it sinks.
Related: Mechanics & Heat.
For a quotation on the Cartesian devil, contact Educational Instrument.
