When the magnet was placed on the left side of the brain region, the volunteers used their left hand more frequently than when the magnet was switched off.
当磁铁被放置在左脑区域，受试者使用左手更加频繁。
2
Another way is to keep a small magnet on hand and place the needle on the magnet.
另一种方法是保持手头一块小磁铁，并放置在磁铁针。
3
The exposed magnet on spider man 's hand shouldn't exceeding 1.5mm, and should withstand the weight a minimum of 450g when hand stick the weight vertically.