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 Lights. How to handle Fluorescent Lamps and CFLs. Fluorescent lights are energy efficient and help reduce greenhouse gases that contribute to global climate change. These lights are able to accomplish this because they contain small amounts of mercury. Mercury is a natural element that has many uses.