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What are those long lightbulbs called used in schools?

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what are they called, and are the energy efficient ?

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  1. neons


  2. a fluorescent bulb.  and they are more efficient than a conventional incandescent bulb.

  3. more energy efficiant yes, but much more polluting. Use LED'S

  4. fluorescent, might be hard to dispose of b/c they contain mercury

  5. fluorescent bulb....that`s silly....is it
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