Ancient

Ancient solar panels

Ancient Egyptians designed their mud brick-houses to store the sun's heat in the walls during the day to be gradually released during cool desert nights. The ancient Greeks, Romans, Native Americans, and Chinese were known to use similar techniques. The photovoltaic effect. . Before civilizations came to rely on fossil fuels for energy, electricity, and heat, they relied on the sun for the comforts and necessities of life.

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