thumb|Foam in an egg carton which simulates the atomic surface structure of graphite, commensurable due to alignment in this photo thumb|Incommensurable due to twisting, so the valleys and hills don't line up
thumb|Foam in an egg carton which simulates the atomic surface structure of graphite, commensurable due to alignment in this photo thumb|Incommensurable due to twisting, so the valleys and hills don't line up
Superlubricity is a regime of relative motion in which friction vanishes or very nearly vanishes. However, the definition of "vanishing" friction level is not clear, which makes the term vague. As an ad hoc definition, a kinetic coefficient of friction less than 0.01 can be adopted. This definition also requires further discussion and clarification.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).