(N) :
A blue laser emits electromagnetic radiation with a wavelength between 400 and 500 nanometers, which the human eye sees in the visible spectrum as blue or violet.
(N) :
A blue laser is a laser that emits electromagnetic radiation with a wavelength 360–480nm, which the human eye sees as blue or violet.
(N) :
A blue laser emits electromagnetic radiation with a wavelength between 400 and 500 nanometers, which the human eye sees in the visible spectrum as blue or violet.
(N) :
A blue laser is a laser that emits electromagnetic radiation with a wavelength 360–480nm, which the human eye sees as blue or violet.