Research background Since their invention in mid 1940’s, fluorescent lamps have been used as a major light source in society。Fluorescent lamps are discharge lamps that need a device called “ballast” to limit thei - Gas Light - Document - PDFSEARCH.IO

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	Research background Since their invention in mid 1940’s, fluorescent lamps have been used as a major light source in society。Fluorescent lamps are discharge lamps that need a device called “ballast” to limit thei Add to Reading List Document Date: 2012-09-04 00:42:14 Open Document File Size: 399,80 KB Share Result on Facebook

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Research background Since their invention in mid 1940’s, fluorescent lamps have been used as a major light source in society。Fluorescent lamps are discharge lamps that need a device called “ballast” to limit theiAdd to Reading List