Hans Christian Oersted

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Hans Christian Oersted

Portrait of Hans Christian Oersted, a Danish physicist, 1777-1851. Oersted studied physical science and pharmacy in Copenhagen, where he later became professor of physics. In 1820 he showed that the needle of a magnetic compass is deflected when electric current passes through a wire close by. In retrospect his experiment is seen as the foundation of the study of electromagnetism. His discovery was published in 1820, and resulted in a whirl of activity in the field of physics. In 1934 a unit of magnetic field strength was named the oersted in his honour. He also obtained the first accurate value for the compressibility of water

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Media ID 6296883

© SHEILA TERRY/SCIENCE PHOTO LIBRARY

1820 Compass Danish Electricity Electromagnetism Engraving Magnetism Physicist Portraits Vertical Voltaic Pile Hans Christian Oersted Oersted

EDITORS COMMENTS
This print showcases the esteemed Hans Christian Oersted, a Danish physicist whose groundbreaking discoveries revolutionized the field of electromagnetism. Born in 1777, Oersted's insatiable curiosity and passion for physical science led him to study both pharmacy and physics in Copenhagen. In 1820, while conducting an experiment with electric currents and magnetic compasses, Oersted made a remarkable observation. He noticed that when an electric current passed through a wire near a magnetic compass needle, it was deflected from its original position. This pivotal moment marked the birth of electromagnetism as we know it today. Oersted wasted no time sharing his findings with the scientific community. His discovery sparked immense excitement among physicists worldwide, igniting a flurry of research and experimentation in this newly emerging field. In recognition of his groundbreaking work, the unit of magnetic field strength was named "oersted" in his honor in 1934. Beyond his contributions to electromagnetism, Oersted also achieved another significant feat during his illustrious career. He obtained the first accurate value for water compressibility—an accomplishment that further solidified his reputation as one of history's most influential scientists. This mesmerizing portrait captures not only Oersted's intellectual brilliance but also hints at the profound impact he had on our understanding of electricity and magnetism. It serves as a powerful reminder of how one individual's relentless pursuit of knowledge can shape entire fields of study for generations to come.

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