A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps. The typical luminous efficacy of fluorescent lighting systems is 50â100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output.
The Royal Australian Navy rank of warrant officer (WO) is the navy's only rank appointed by warrant and is equivalent to the army's WO1 (the equivalent of the army's WO2 rank is a chief petty officer).
Warrant officers are a rarity in the Marine Corps. A warrant officer 1, whose pay grade is W-1, begins at $2,721 per month and -- after 20 years, receives $4,702. A chief warrant officer 2, or W-2, begins at $3,100 per month and after 20 years' service tops out at $4,188 per month.