Hb-5 The Bimetallic Strip (Compound Bar)
Published: Monday 13 March 2006 - Updated: Monday 28 March 2011
To demonstrate differential expansion and curvature induced by unequal expansion.
- Bimetallic strip consisting of Brass-Invar
- Bunsen burner
Click on pictures to enlarge.
The bimetallic strip suffers appreciable curvature within a few seconds of being placed in the flame of the bunsen burner. A dismantles fire alarm that relies on a bimetallic strip as its sensor is also available if required.