Bulb research

Bulb research

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This image is part of the feature Light Bulb Research

Credit: VOLKER STEGER/SIEMENS/SCIENCE PHOTO LIBRARY

Caption: Bulb research. Researcher using a small Ulbricht, or integrating, sphere to study a light bulb. Once closed, the sphere's reflective inner surface allows the intensity of the bulb to be found using a sensor. Photographed at Siemens' Osram Sylvania Laboratory in Beverly, Massachusetts, USA.

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Keywords: american, bulb, electrical, electrical engineering, electricity, emission, energy, industry, integrated, lamp, man, massachusetts, measuring light output, osram sylvania laboratory, physicist, physics, radiation, researcher, scientist, siemens, technology, ulbricht sphere, united states, usa

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