What is Electromagnetism? A Basic Definition

Electro-magnetism \E*lec`tro-mag"net*ism\ n.
   1.
         magnetism produced by an electric current.
      [WordNet
         1.5]

   2. one of the fundamental forces of nature,
         responsible for
      both electrical and magnetic
         phenomena. Called also the
      electromagnetic
         force. Formerly believed to be separate
     
         phenomena, electricity and magnetism were shown by
     
         experiment and theory to be different aspects of the
     
         electromagnetic force. It is responsible for the
         forces
      generated between magnetically or electrically
         charged
      objects, and is the fundamental force
         responsible for the
      characteristics of
         electromagnetic radiation, including
      light.
     
         [PJC]

   3. the branch of physics concerned with
         electromagnetic
      phenomena.
      [WordNet 1.5]

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Off-site Electromagnetism Links, User Submitted

The following links have been collected through user bookmark submission in the Electromagnetism category. Please note, because these resources are off-site we cannot guarantee the accuracy or quality of any information.

Wed Jan 7

• Streaming video: X-rays

Tue Jan 6

• Dangers du portable, antenne relais - danger téléphone portable danger wifi - risque santé portable

Sun Jan 4

• arXiv.org Search: Jose A. Heras
• [0812.4785] Can Maxwell's equations be obtained from the continuity equation?: We formulate an existence theorem that states that given localized scalar and vector time-dependent sources satisfying the continuity equation, there exist two retarded fields that satisfy a set of four field equations. If the theorem is applied to the usual electromagneti c charge and current densities, the retarded fields are identified with the electric and magnetic fields and the associated field equations with Maxwell's equations. This application of the theorem suggests that charge conservation can be considered to be the fundamental assumption underlying Maxwell's equations.
• Physics4Kids.c om: Electricity & Magnetism: Introduction
• Hermann von Helmholtz - Wikipedia, the free encyclopedia: Hermann Ludwig Ferdinand von Helmholtz (August 31, 1821?September 8, 1894) was a German physician and physicist who made significant contributions to several widely varied areas of modern science. In physiology and physiological psychology, he is known for his mathematics of the eye, theories of vision, ideas on the visual perception of space, color vision research, and on the sensation of tone, perception of sound, and empiricism. In physics, he is known for his theories on the conservation of energy, work in electrodynamic s, chemical thermodynamics , and on a mechanical foundation of thermodynamics . As a philosopher, he is known for his philosophy of science, ideas on the relation between the laws of perception and the laws of nature, the science of aesthetics, and ideas on the civilizing power of science. A large German association of research institutions, the Helmholtz Association, is named after him.[1]

Sat Jan 3

• the physics arXiv blog " Blog Archive " Quantum zeno effect explains bird navigation

Fri Jan 2

• Charge Electromagnets 08.21.2007.pdf (application/p df Object): "Let' ;s Build Electromagnets " from the Framework for Physical Science. Adapted in my physics class as an assessment for the Electricity & Magnetism unit.

Thu Jan 1

• RCL a.c. series circuit

Wed Dec 31

• Amazon.com: Macroscopic Electromagneti sm (Monographs in Natural Philosophy): F.N.H. Robinson: Books

Sun Dec 28

• Free Online MIT Course Materials | Supplemental Resources | MIT OpenCourseWare
• What is St. Elmo's Fire?

Fri Dec 26

• Intermolecular Forces: Nice graphics.

Thu Dec 25

• electromagneti c waves and antennas
• Electromagneti c radiation - Wikipedia, the free encyclopedia

Off-site Electromagnetism Research Links

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