Magnetic Viewing Films: making the invisible visible with four versions of magnetic viewing film. 1) the classic green Magneview film from the 1990s with tiny bubble cavities filled with oil and flakes of nickel, 2) silver high-definition film with smaller cavities, 3) golden high definition film with reflective crystals of some kind in the tiny capsules, and 4) the most recent invention featuring capsules filled with suspended magnetic nanoparticles producing different colors from orange (low f

Horseshoe Magnet with Keeper: magnetic field lines connect North to South poles from one side of the U shaped magnet 🧲, through the air, to the other- and magnetic viewing film reveals the strong fields of this vintage magnet. However, when a bar of soft iron is attached, the magnetic field lines prefer to pass through the bar, and the field is then concentrated in the bar and significantly reduced in the surrounding air- basically shutting off the field around the magnet as seen by the viewing

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30K views · 434 reactions | Magnetic Equilibrium Pen: a weighty and...