Students always remember the effect of heat on the brass ball. When cool, the 30cm brass ball passes easily through the matching brass ring; when hot, it won���t go through.
Oakley STEM Center Lending Library
https://www.tntech.edu/stem
155 W 7th Sthttps://www.tntech.edu/stem
Cookeville, 38505
USA
(931) 372-6573