While some indoor lights like LEDs and fluorescents can activate solar cells, the minuscule electricity produced is not practical for powering systems designed for sunlight.
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At our testing lab in Des Moines, Iowa, we put 27 outdoor solar lights to the test. We assembled them, sprinkled them with water, dropped a golf ball on them (from 6 feet away onto the light and from 4 feet o.
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Photovoltaic (PV) panels convert sunlight into direct current (DC) electricity, which is then stored in batteries or used to power traffic lights directly.
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Yes, photovoltaic (PV) cells can absorb photons from lamp light to generate electricity. However, since indoor light intensity (approximately 500 lux) is typically less than 1% of sunlight, the conversion efficiency is extremely low.
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