LIGHTING EFFICIENCY the amount of visible light produced for a given energy input
Historically, lightbulbs were purchased based on energy consumption Today, more informed decisions may be made based on a bulbs light output and energy consumption However, not all lightbulbs light output is the same
Luminosity Function Response of the Human Eye to light
Sources of Inefficiencies Heat generation Generation of radiation outside the visible spectrum
Lighting Options Incandescent lamps Fluorescent Lamps LED (lamps) Electron Stimulated Luminescence Halogen Lamps Sodium Lamps
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