Fluorescent lamps generate more than 70% of all the artificial light in the world but consume only 50% of the energy needed for lighting.
They need only about one fifth of the electricity that an ordinary light bulb needs.
Depending on the type and the way in which they work, their average life is between 5000 and 45,000 hours, whereas a light bulb lasts only for 1000 hours.
Compact fluorescent lamps produce light using the same principle as fluorescent lamps. By bending the glass tube we can create very compact lamps.