Page Comparison

These units measure magnetic field, or magnetic flux density, which Primel terms “magnetic force”, typically symbolized

\mathbf{F}_m = q_0\left(\mathbf{v}_0 \times \mathbf{B} \right)

\mathbf{B}  = \mu_0 \frac{q\mathbf{v} \times \hat{\mathbf{r}}}{\sigma r^2}

where:

• Mathinline
  body \mathbf{F}_m

  is the force induced by magnetic field

  Mathinline
  body \mathbf{B}

  on test charge

  Mathinline
  body \displaystyle q_0

  that is moving with velocity

  Mathinline
  body \displaystyle \mathbf{v}_0

• Mathinline
  body \mathbf{B}

  is the magnetic field generated by charge

  Mathinline
  body \displaystyle q

  moving with velocity

  Mathinline
  body \displaystyle \mathbf{v}

• Mathinline
  body \displaystyle \mathbf{r}

  is the displacement vector to moving charge

  Mathinline
  body \displaystyle q

  • Mathinline
    body \displaystyle \hat{ \mathbf{r}}

    is the unit vector in the direction of

    Mathinline
    body \displaystyle \mathbf{r}

  • Mathinline
    body r = \left| \mathbf{r}\right|

    is the length of

    Mathinline
    body \displaystyle \mathbf{r}

• Mathinline
  body \sigma = 2\tau = 4\pi

• Mathinline
  body \mu_0

  is the “vacuum inductivity” (vacuum permeability)

...