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LIGHTING EFFICIENCY Neil Hope Taylor McKenzie
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LIGHTING EFFICIENCY the amount of visible light produced for a given energy input
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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
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Luminosity Function Response of the Human Eye to light
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Sources of Inefficiencies Heat generation Generation of radiation outside the visible spectrum
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Lighting Options Incandescent lamps Fluorescent Lamps LED (lamps) Electron Stimulated Luminescence Halogen Lamps Sodium Lamps
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Electron Stimulated Luminescence
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Sodium
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Household Lighting
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Lighting Efficacy
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Thank You Any Questions? – eg When does the break start? Sooner if you dont ask questions
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