4B60.18 - Smashing Spheres - 2" Ball Bearings
Hold paper between the two ball bearings. When the bearings are smashed together heat is generated at the point of contact and burns a hole in the paper. Note: smell of burnt paper will be apparent.
- James Rohr, Si-Yin Wang, and Vitali F. Nesterenko, "'Ripples' in an Aluminum Pool?", TPT, Vol. 56, #5, May 2018, p. 281.
- Stephen Brusca, "Heating the Hard Way", TPT, Vol. 28, #4, Apr. 1990, p. 240.
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