Laser yog suav hais tias yog ib qho ntawm feem ntau tus neeg sawv cev tshiab txheej txheem txheej txheem. Nws paub txiav, vuam, kos npe, kos duab thiab tu los ntawm kev siv lub teeb lub zog laser ntawm cov khoom ua haujlwm. Raws li "ntse riam", ntau thiab ntau daim ntawv thov ntawm laser pom.