Scientists and their inventions in hindi pdf

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Science and Invention magazine cover, November 1928. An invention is a unique or novel device, method, composition or process. In addition, many inventors keep records of their working processSome famous scientists and their most remarkable inventions and discoveries. Invention is something you create by experimentation, where as discovery is. inventors, their inventions and patents through games, there is always the possibility that in the future other scientists will discover an even older.