Compound Bar, Set of 4

Study thermal expansion quickly and easily with this set of brass/aluminum, brass/iron, copper/iron, and brass/copper bimetallic bars. When heated, the bars form unique shapes due to their distinct coefficients of linear thermal expansion. The included activity guide features background information discussing applications, an activity, and the coefficients of linear thermal expansion for the different metals.
Metal bars (except the brass one) are stamped for identification as follows: aluminum (Al), iron (Fe), and copper (Cu).