Which light bulb is better?
1. Incandescent light bulb is an electric light with a wire filament heated to a high temperature, by passing an electric current through it, until it glows with visible light (incandescence).
2. Compact fluorescent lamp (CFL) bulb remains the same as in other fluorescent lighting: electrons that are bound to mercury atoms are excited to states where they will radiate ultraviolet light as they return to a lower energy level; this emitted ultraviolet light is converted into visible light as it strikes the fluorescent coating on the bulb.
3. LED lamp is a light-emitting diode (LED) product which is assembled into a lamp (or light bulb) for use in lighting fixtures.
Now, from the above chart you can easily find out that which one is better.
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