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 Magnetic Field Viewing Film, Magnetic Field Viewer, Magnetic Flux Display, Magnet Pattern Detector, See Magnetic Field for Scientific Project

https://en.wikipedia.org/wiki/Magnetism
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https://en.wikipedia.org/wiki/Magnetic_field_viewing_film

Application of Functionalized Fe3O4 Magnetic Nanoparticles Using CTAB and SDS for Oil Separation from Oil-in-Water Nanoemulsions | Langmuir

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