red and blue horseshoe magnet with iron filings background top view |
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| navigate by keyword : attract background blue concept dust education effort equipment experiment field filings force gravity horseshoe induction iron isolated lab laboratory learn magnet magnetic magnetism metal nature north object one pattern physics polarity powder power red research school science scientific shape south strength study top view white |
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| Red and blue horseshoe magnet with iron filings on white background, top view |
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