What makes these alternative energy sources function?
Solar panels crown rooftops and roadside signs, and help keep spacecraft powered.
But how do solar panels work? Simply put, a solar panel works by allowing photons, or particles of light, to knock electrons free from atoms , generating a flow of electricity , according to the University of Minnesota Duluth . Solar panels actually comprise many, smaller units called photovoltaic cells — this means they convert sunlight into electricity. Many cells linked together make up a solar panel.
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