Depending on whether the Kelvin force density acts against or in favor of the flow direction, the pressure drop is, respectively, larger or smaller than that without magnetic field, though, in all cases, magnetoviscothickening is the prevailing mechanism.
If the dust grains are paramagnetic so that they act somewhat like a magnet, then the general magnetic field, though very weak, can in time line up the grains with their short axes in the direction of the field.
For example, the honeycomb is somehow aligned to the earth's magnetic field, though no one quite knows why.
As closely as Mariner 10's measurements could determine, Mercury's magnetic field, though only 1 percent as strong as Earth's, resembles Earth's field (see geomagnetic field) in being roughly dipolar and oriented along the planet's axis of rotation.
Actual saturation is reached at very large magnetic field though.
Note that we follow the usual geomagnetic convention and refer to (mathbf {B}) as the magnetic field, though it is strictly the magnetic flux density.
The permanent magnet (ferro-magnets of iron-based, nickel, cobalt or rare earth element) is having magnetic fields of less than 1 T, though trend is to improve the magnetic field strength by the development of materials and shape design parameters (Ormerod and Constantinides 1997; Zhu and Halbach 2001; Iwashita et al. 2008).
Before that theory can be verified though, the experiments need to be repeated with weaker magnetic fields that more closely mirror Earth's. .
Some birds use magnetic fields to navigate.
"Did the tilt cause the magnetic fields to shut down?
