The great inventor Thomas Edison once said, “So long as the sun shines, man will be able to develop power in abundance.” His wasn’t the first great mind to marvel at the notion of harnessing the power of the sun; for centuries inventors have been pondering and perfecting the way to harvest solar energy.
They’ve done an amazing job with photovoltaic cells which convert sunlight directly into energy. And still, with all the research, history and science behind it, there are limits to how much solar power can be harvested and used — as its generation is restricted only to the daytime.
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Source: Science Daily
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