51.1 MB (3.0 MB compressed)
3780 x 4723 pixels
32.0 x 39.9 cm ⏐ 12.6 x 15.7 in (300dpi)
SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
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.
Model release not required. Property release not required.