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bulb Incandescent
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LED Light Bulbs Have a Slight Environmental Edge on Compact Fluorescent Bulbs
Sep 10, 2012LED light bulbs have a slight environmental edge on compact fluorescent bulbs and both trump traditional incandescent bulbs by a wide margin, the Pacific Northwest National Laboratory says in a new report. PNNL, a U.S. Department of ...
Tags: LED, bulb Incandescent, Light Bulb
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Electricity Is Generated and Supplied to Large Installations in Three Phases
Sep 10, 20123 phase power Electricity is generated and supplied to large installations in three phases. The Red, Yellow and Blue phases are all supplied down one cable to the building but effectively give three separate supplies. This is usually the ...
Tags: Stage Lighting
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