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Fluorescent lamp
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===Lamp shape=== Fluorescent tubes are long, low-luminance sources compared with [[High-intensity discharge lamp|high intensity discharge lamps]], [[Incandescent light bulb|incandescent]] and [[Halogen lamp|halogen]] lamps and high power LEDs. However, low luminous intensity of the emitting surface is useful because it reduces [[Glare (vision)|glare]]. Lamp fixture design must control light from a long tube instead of a compact globe. The [[compact fluorescent lamp]] (CFL) replaces regular incandescent bulbs in many light fixtures where space permits.
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