Intense beams (6)
I believe the answer is:
lasers
(Other definitions for lasers that I've seen before include "Intense beams of light" , "Light amplifications by stimulated emissions of radiation" , "Optical devices" , "Light beam devices" .)
I believe the answer is:
lasers
(Other definitions for lasers that I've seen before include "Intense beams of light" , "Light amplifications by stimulated emissions of radiation" , "Optical devices" , "Light beam devices" .)