A collision is an interaction between approaching bodies or particles that changes their motion. Momentum conservation and conservation of energy constrain the outcomes; inelastic collisions can transfer mechanical energy into internal degrees of freedom.
An encounter of charged particle beams at an impact parameter large enough to suppress direct overlap of the atomic nuclei, while their electromagnetic fields still interact.
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"Collision" can refer to different concepts depending on the context in which it is used. Here are a few common interpretations: 1. **Physics**: In physics, a collision refers to an event where two or more bodies exert forces on each other for a relatively short time. There are different types of collisions, such as elastic collisions (where kinetic energy is conserved) and inelastic collisions (where kinetic energy is not conserved).