Beam

Beam may refer to:

== Streams of particles or energy == Light beam, or beam of light, a directional projection of light energy Laser beam Radio beam Particle beam, a stream of charged or neutral particles Charged particle beam, a spatially localized group of electrically charged particles Cathode ray, or electron beam or e-beam, streams of electrons observed in discharge tubes X-ray beam, a penetrating form of high-energy electromagnetic radiation Molecular beam, a beam of particles moving at approximately equal velocities