One nice thing about light bulbs is that they provide light indoors and when it is dark outside, without having to light a candle or an oil lamp. They are also relatively safe, clean and easy to operate.
Disadvantages include the fact that you will need electricity and wires that are properly installed and cannot be easily moved about. It is also difficult to repair a broken light bulb or one that has burned out, and they must be disposed of and replaced.
Advantages: By using less electricity, they help the environment. They are also cheaper in the long term. Disadvantages: The short-term investment is larger; they are more expensive than the incandescent lights. This is more than compensated by the savings in electric energy, but you may be unlucky to have several bad bulbs; or somebody may steal them, especially outdoors. Also, for some very specific applications, the heat generated by the old-fashioned incandescent light bulbs is actually needed.
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