In an average February, Rome has four days that dip below 32 degrees F; the average high is 56, and the average is 40. Paris averages 12 days each February below 32 degrees F; the average high is 45 and the average low is 34. Only you know what constitutes weather that is too cold to enjoy.
A fluorescent lamp or a fluorescent tube is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the bulb to glow.
Fluorescent lamps are highly efficient, using electric discharge through low-pressure mercury vapour to produce ultraviolet (UV) energy. Identification: Fluorescent lamps generally range in diameter from 2.54 to 3.81 centimetres (1 to 1.5 inches); and in length rom 0.61 to 2.44 meters (2 feet to 8 feet).