#pic2mag

Think of what you can do with reflections of magnetic fields. Education, Visualization, Realtime Design, Computer chips that use light, because the reflections use little energy/time to change reflection angle.   In my mind seeing reflections of a magnetic field is just as good as seeing a magnetic field. https://www.youtube.com/watch?v=pc9ghVd1rsw

Science-Art of Magnetically Controlled Ferrofluid Diffraction. Compare the magnetic field plot to the Ferrocell image, #18 named "Toto-Ordinata". There is a grid of twenty nine magnets and the repeating sets of yellow/teal/green isopotential lines show the field strength.

Science-Art of Magnetically Controlled Ferrofluid Diffraction Compare the Magnetic Field to the Ferrocell image #13, named ‘Four Loops’  

New Ferrocell Paper - Observing Dynamical Systems Using Magneto-Controlled Diffraction - http://dx.doi.org/10.3390/condmat4020035

doi: 10.3390/condmat4020035

Yellow, Green, and Teal colors are Isopotential lines and the red-blue dash shows compass direction.