
创新力课堂
在未来社会,与孩子一起玩科技,与家长一起探讨孩子的教育问题。
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66期
To visualize magnetic field lines, one can use iron filings on a paper placed near a magnet, then trace the pattern with a pencil or fix the paper, embed wax granules, cool, and transfer the filings after heating. The size of the magnetic field lines depends on the magnet"s strength. Parallel arrangement of magnets enhances the overall magnetic field.


19期

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