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Nikola Tesla for Kids: His Life, Ideas, and Inventions, with 21 Activities The Human Body black holesNikola Tesla was a physicist, electrical engineer, and world renowned inventor whose accomplishments faded into oblivion after his death in 1943. Some considered this eccentric visionary to be a mad scientist, but many of his ideas and inventions that were deemed impossible during his lifetime have since become reality. He is now acknowledged to have invented the radio ahead of Marconi. Tesla was undeniably eccentric and compulsive. Among other