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The energy -saving lamp is a strong flask, inside of which there are mercury vapors and argon. Luminofor is located on the surface — a substance that begins to glow brightly under the influence of ultraviolet radiation. When you turn on gaseous substances in the flask, ultraviolet radiation is produced, the phosphor begins to glow, as a result, the lamp gives light a very reminiscent of the daytime. A luminous substance can be both white or another color, so energy -saving lamps can be multi -colored or have a light shade. They usually have a specific shape, but their base is standard, which approaches all the plafones and chandeliers.