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- * , helicity
* , the position of a particle in three-space
* , the velocity of a particle
* , the acceleration of the particle
* , the linear momentum of a particle
* , mass flow
* , the force exerted on a particle
* , electric current density
* , the electric field
* , the electric displacement field
* , electric polarization
* , electromagnetic vector potential
* , the Poynting vector . (en)
- * , the time when an event occurs
* , the mass of a particle
* , the energy of a particle
* , power
* , electric charge density
* , scalar electric potential
* , energy density of the electromagnetic field
* , the angular momentum of a particle
* , the magnetic field
* , the auxiliary magnetic field
* , magnetization
* , the Maxwell stress tensor.
* All masses, charges, coupling constants, and other scalar physical constants, except those associated with the weak force. (en)
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