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Bell jar model lung

''Bell jar model lung

This simple Bell jar model lung can be used to demonstrate the basic principles of breathing. The model should be assembled as in the diagram. A swimming cap makes a suitable diaphragm. The cap can be attached to the bottom of the bell jar, and the balloons can be attached to the Y shaped tube, with elastic bands or plastic coated wire.

How the Model Works

The cavity inside the bell jar is airtight.

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