Among other characteristics of the laser are the coherent radiation, it is that, when electric current passes through it, the radiation is emitted in the form of infrared, which allows the laser to be visible to the human eye.
Phakathi kwezinye izici ze-laser yimisebe ehambisanayo, ukuthi, lapho igesi kagesi idlula kuyo, imisebe ikhishwa ngendlela ye-infrared, evumela ukuthi i-laser ibonakale esweni lomuntu.