Lamp testing

Lamp testing

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Caption: Lamp testing. Electrical equipment being used to test various different types of light bulbs. These tests ensured that public buildings had the most economical and efficiently maintained light sources possible. Photographed at the National Physical Laboratory, Teddington, UK.

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Keywords: 1900s, 20th century, analysing, analysis, black-and-white, britain, british, efficiency, electric, electrical, electricity, england, english, equipment, historical, history, history of science, industrial, industry, lab, laboratory, lamp, lamps, light bulb, lightbulb, lighting, lights, monochrome, national physical laboratory, npl, physical, physics, research, switches, technological, technology, teddington, test, testing, uk, united kingdom

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