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dipole moment
(redirected from Dipole moments)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.03 sec.
dipole moment [′dī‚pōl ‚mō·mənt]
(electricity)
(electromagnetism)
(physical chemistry)
The vector sum of the bond moments in a molecule, a measure of the polarity of the molecule.

Dipole moment

A mathematical quantity characteristic of a dipole unit equal to the product of one of its charges times the vector distance separating the charges. The dipole moment μ associated with a distribution of

() 
electric charges qi is given by where r i is the vector to the charge qi. For systems with a net charge (for example, positive), the origin is taken at the mean position of the positive charges (and vice versa). Dipole moments have the dimensions coulomb-meters. Molecular dipole moments were previously expressed in debye units, where 1 debye = 3.336 × 10-30 C · m. See Dipole



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[ILLUSTRATION OMITTED] Cover it in nanoparticles Layers of molecules called carboranethiols can be manipulated to have different dipole moments (indicated by arrows).
When it is placed in an external magnetic field, a net nuclear magnetization is created by the equilibrium difference between the magnetic dipole moments of spin populations in two different energy states.
Frohlich postulated unusual protein dipole moments and wave frequencies as exhibited by cell membranes and certain enzymes.
 
 
 
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