Hans Christian Ørsted (1777-1851) was one of the leading scientists of the nineteenth century, having played a crucial role in founding electromagnetism. Unfortunately for the English-speaking world, ...

Hans Christian Ørsted (1777-1851) was one of the leading scientists of the nineteenth century, having played a crucial role in founding electromagnetism. Unfortunately for the English-speaking world, ...

flags etc.). In 1821 Hans Christian Oersted observed that a battery connected to wire moved a compass needle. This was the beginning of the birth of electromagnetism. From this came the invention ...