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Francesco Redi. In 1668, Francesco Redi published the first set of experiments challenging spontaneous generation. In these experiments, he demonstrated that maggots arise from the eggs of flies rather than directly from rotting meat. He did so by taking several jars and placing raw meat inside of them.
Alessandro Volta-Example of Voltic Pile. Photograph courtesy of the National Library of Medicine. In 1800, Alessandro Volta of Italy built the voltaic pile and discovered the first practical method of generating electricity.Count Volta also made discoveries in electrostatics, meteorology and pneumatics.hotograph courtesy of the National Library of Medicine. In 1800, Alessandro Volta of Italy built the voltaic pile and discovered the first practical method of generating electricity.