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Visualizing magnetic field lines with a cylindrical bar magnet and iron powder suspended in oil.

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Wonder of Science

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122,520 просмотров • 3 месяцев назад •via X (Twitter)

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A bar magnet has a magnetic field around it. The magnetic field around a bar magnet flows from the north pole to the south pole and is strongest at the poles. ✍️
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A magnet is an object that creates a magnetic field, which can attract certain metals like iron, nickel, and cobalt. This force comes from the alignment of tiny magnetic fields of atoms inside the material, making it either pull objects toward it or repel other magnets
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You can use Blender's geometry nodes to solve physics and electromagnetic equations such as Biot-Savart law. You can calculate the magnetic field of a coil anywhere in 3D space and visualise the magnetic fields. Additionally, you can see in real-time how the magnetic field lines change as the coil gets deformed and twisted! #geometrynodes #b3d #blender3d #electronics #Engineering #Science #physics #kicad #circuits
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You can use Blender's geometry nodes to solve physics and electromagnetic equations such as Biot-Savart law. You can calculate the magnetic field of a coil anywhere in 3D space and visualise the magnetic fields. Additionally, you can see in real-time how the magnetic field lines change as the coil gets deformed and twisted! #geometrynodes #b3d #blender3d #electronics #Engineering #Science #physics #kicad #circuits

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Magnetic paint. It enables a wall to hold 5 sheets of paper and the magnetic plaster can hold up to 8 sheets of paper with one magnet.
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Sox disc magnets are shaping the ring magnet’s field into a multi-petal or hexagonal-looking interference pattern on the ferrocell. In other words, it’s not just one magnet showing a field; it’s a coupled magnetic system whose symmetry becomes visible.
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About 41,000 years ago, during the Laschamp Geomagnetic Excursion, Earth's magnetic field weakened drastically, dropping to just 5% of its current strength. This means that Earth’s natural magnetic shield, which normally protects us from harmful space radiation, was almost entirely gone. The magnetic field lines (seen as white or blue strands) became twisted and chaotic, showing how disordered the field became during the excursion. Normally, these lines flow smoothly from pole to pole, but during this event, they bent, broke, and tangled. The Earth turns red in the visualization, indicating an extremely weak magnetic field. The red color means the planet was barely protected from solar and cosmic radiation. This visualization was created by scientists from DTU and GFZ using data from ESA’s Swarm mission. It includes a stereo soundscape and a visual tracing of the magnetic field lines. This event caused abrupt climate change and mass extinction, and the same thing is happening today!

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