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).
The uniforms of the United States Navy include dress uniforms, daily service uniforms, working uniforms, and uniforms for special situations, which have varied throughout the history of the navy. For simplicity in this article, Officers refers to both commissioned officers and warrant officers.[1]