Beams of energy, particles or radiation used offensively.
Nature[]
Laser weapons are not as widely used as blasters since they have a higher energy demand although some race learn to overcome the energy demands
Type 1[]
These are beams of light, high temperature streams of energy that melt through a target. Most are invisible to the human eye, but the more powerful one have a photothermal effect.
Type 2[]
These are simple particle beams, not just Lasers (beams of light) but particle beam which often heat up the target.
Appearance[]
Depends on the designer and technology.