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Principle
Metal tubes are heated with steam. The linear expansion of three
different metals is determined with the aid of a rotating-shaft
pointer. From this the metals' coefficient of linear expansion is
determined (Supplementary problem). The use of a rolling-shaft
pointer is advantageous because the resulting indication of
expansion is frictionless. The functional principle of a
rotating-shaft pointer can be easily demonstrated in a simple
experiment and studied by the students. The students should do this
before they calculate the change in length Δl in
"Evaluation".
Benefits
- Real stand material for an esecially stable and safe setup
- Student-suitable experiment descriptions with reports available
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Digital learning
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