Particle beams are streams of charged or uncharged particles, such as electrons, protons, or ions, that are accelerated to high speeds. These beams are generated using devices called particle accelerators, which use electric and magnetic fields to propel particles along a specific path. Particle beams have various applications in fields like physics, medicine, and materials science. In medicine, particle beams are used in radiation therapy to target and destroy cancer cells while minimizing damage to surrounding healthy tissue. Additionally, in research, they help scientists study fundamental particles and forces, contributing to our understanding of the universe and the development of new technologies.