Helmholtz, Hermann Ludwig Ferdinand von
Published: September 7, 2006, 9:22 pm
Updated: September 7, 2006, 9:22 pm
This article has been reviewed by the following Topic Editor:
Peter Saundry
Hermann Ludwig Ferdinand von Helmholtz (1821-1894), German physicist who first extended Joule's results to a general principle, now known as law of the conservation of energy. Helmholtz described the relationship between mechanics, heat, light, electricity, and magnetism as manifestations of a single force. He presented a mathematical proof for this in Über die Erhaltung der Kraft (On the Conservation of Force, 1847). Helmholtz's use of the word "force" corresponds to what later became known as energy. Helmholtz had wide-ranging interests: in 1851, he invented the ophthalmoscope, an instrument that was used to look into the human eye; he also studied electromagnetism, earth science, and the physiology of the senses. A large German association of research institutions, the Helmholtz Association, is named after him.
Further Reading
Helmholtz Biography (University of St. Andrews, Scotland)
Helmholtz Association Homepage
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Citation
Cutler J. Cleveland (Lead Author);Peter Saundry (Topic Editor) "Helmholtz, Hermann Ludwig Ferdinand von". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth September 7, 2006; Last revised Date September 7, 2006; Retrieved May 23, 2013 <http://www.eoearth.org/article/Helmholtz,_Hermann_Ludwig_Ferdinand_von>
The Author
Cutler J. Cleveland is Professor of Earth and Environment at Boston University, where he also is on the faculty of the Center for Energy and Environmental Studies. Professor Cleveland is Editor-in-Chief of the Encyclopedia of Energy (Elsevier, 2004), winner of an American Library Association award, the Dictionary of Energy (Elsevier, 2005), Handbook of Energy (Elsevier, forthcoming), and is the Founding Editor-in-Chief of the Encyclopedia of Earth. He is the recipient of the Adelma ... (Full Bio)
Hermann Ludwig Ferdinand von Helmholtz (1821-1894), German physicist who first extended Joule's results to a general principle, now known as law of the conservation of energy. Helmholtz described the relationship between mechanics, heat, light, electricity, and magnetism as manifestations of a single force. He presented a mathematical proof for this in Über die Erhaltung der Kraft (On the Conservation of Force, 1847). Helmholtz's use of the word "force" corresponds to what later became known as energy. Helmholtz had wide-ranging interests: in 1851, he invented the ophthalmoscope, an instrument that was used to look into the human eye; he also studied electromagnetism, earth science, and the physiology of the senses. A large German association of research institutions, the Helmholtz Association, is named after him.
Further Reading
Helmholtz Biography (University of St. Andrews, Scotland)
Helmholtz Association Homepage
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