Light bulb research

Light bulb research

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Caption: Light bulb research. Researcher measures the brightness of a prototype low energy light bulb. Photographed at the research laboratory of Osram Sylvania, Massachusetts, USA.

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Keywords: 2005, adult, american, analysing, beverly, brightness, bulb, caucasian, domestic, electrical, electricity, energy, energy efficient, female, holding, household, human, industry, laboratory, lamp, light, light bulb, light output, light research, lighting research, low energy, luminosity, massachusetts, osram sylvania, physical, physics, researcher, united states, us, usa, white, woman

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