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There is another issue regarding life expectancy. All lamp types suffer light loss over a period of time. This is certainly true with any fluorescent lamp.
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So, a lamp that is still burning many thousands of hours after its rated life is no longer efficient and should be replaced. More importantly, it simply is not doing its intended job and the lighting environment is very poor.
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There was absolutely no visible difference between the three old lamps and the new one. Overall, the apartment he lives in is too well-lit. He could stand to put the glass lamp covers back up.