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.
Compact fluorescent light bulbs are an energy-efficient alternative to conventional incandescent bulbs. In an incandescent bulb, electric current heats a thin filament to the point that it glows. This design produces a warm, soft light, but the bulb loses most of its energy in the form of heat.