| 25 | | If the gradient of magnetic pressure was along the field line, then that first term on the RHS would just be equal to the gradient of magnetic pressure. This would cancel with the other term for magnetic pressure in the Navier Stokes equation. Thus, we see that gradients in the magnetic pressure do not provide a force ''along'' field lines, i.e. does not provide an isotropic pressure force. Rather, it only acts perpendicular to the field lines, which is what we will consider next. |
| | 25 | If the gradient of magnetic pressure was along the field line, then that first term on the RHS would just be equal to the gradient of magnetic pressure. This would cancel with the other term for magnetic pressure in the Navier Stokes equation. Thus, we see that gradients in the magnetic pressure do not provide a force ''along'' field lines, i.e. do not provide an isotropic pressure force. Rather, they only act perpendicularly to the field lines, which is what we will consider next. |
