| Manufacturer | Educational Innovations, Inc. |
Two one pound, 2-inch diameter, chrome steel spheres, When smashed together with a piece of paper, the spheres create heat at the contact point and burn a small hole in the paper due the transfer of energy from mechanical to heat.
SIUE STEM Resource Center
http://www.siuestemcenter.org/
Southern Illinois University Edwardsvillehttp://www.siuestemcenter.org/
Science East, Room 1276
Edwardsville, IL, 62026
USA
618-650-3065