Light Source : A device that emits light, including an incandescent or fluorescent light bulb, with each filament in an incandescent bulb having multiple filaments deemed to be a separate light source
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}