Originally Posted By: Bill S.

Finiter. (one not already asked) What is an infinitely small particle, and how does it differ from nothing?

There cannot be an infinitely small particle; there can be an infinitesimally small particle. Though literally both will be the same, in science, infinitesimal is used to represent very small (I think). IMO (based on my theory), a particle should have mass and volume, however small it may be.