The atom is then transferred into an environment of a light field in which the light - absorption and light - emission of the atoms act as collisions with other particles. (sciencedaily.com)
By removing food and other particles in between your pet's teeth, you are helping to reduce the occurrence of bad breath. (1800petmeds.com)
In physics, heat is a form of energy associated with the motion of atoms, molecules and other particles which comprise matter; generally defined as energy in motion. (sciencedaily.com)