Lasers are instruments which convert electrical energy into light and electromagnetic energy for a variety of purposes.
(Lasers; are; instruments which convert electrical energy into light and electromagnetic energy for a variety of purposes) (instruments; convert; electrical energy; into light and electromagnetic energy; for a variety of purposes)
Lasers instruments
are convert
instruments which convert electrical energy into light and electromagnetic energy for a variety of purposes
electrical energy into light and electromagnetic energy for a variety of purposes