Description

For demonstrating
that the diffrent metals
have different linear
expansion extents
when rising to te same
temperature
For demonstrating
that the different
metals have different linear expansion extents
when rising to the same temperature,comprising
three rods made of copper,iron,and aluminum
respectively
Item No.          Specification
P31 – 017A       Cu & Al, Wooden
P31 – 017B       Cu & Fe, Wooden
P31 – 017C       Cu & Al, Plastic
P31 – 017D       Cu & Fe, Plastic