It requires very specific circumstances, but it does happen. Nothing to do with nanoparticles. It just requires a smooth sloped surface beneath and a very specific temperature gradient, so it keeps slowly melting and refreezing.
Only people mentioned by @jjj in this post can reply
No replys yet!
It seems that this publication does not yet have any comments. In order to respond to this publication from J.J. Jameson, click on at the bottom under it