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马格尼斯和外福来知道了人体细胞内有磁性物质,那动物体内是不是也有呢?候鸟:身上藏着“指南针”正巧,天空中飞过一群去往南方的大雁。“它们没有指南针,在夜间怎样分清南方北方呢?”外福来自言自语。查阅了资料,他们恍然大悟:原来,大雁身上真有一个“指南针”!科学家发现,候鸟耳朵内的毛细胞中藏有很多个铁质小球。这些直径只有20纳米的铁质小球,即使几千个排列起来也只有头发丝那么粗,它们就像一个个指南什,可
Magnus and outsiders to know that there are magnetic substances in human cells, the animal is not there? Migratory birds: body hidden “compass ” happens to fly in the sky a group of goose to the south. “They do not have a compass, how to distinguish between the north and the south at night?” Access to information, they suddenly realized: Originally, Dayan who really have a “Compass ”! Scientists found that migratory birds within the hair cells contain many iron pellets. These iron pellets, which are only 20 nanometers in diameter, have only a few thousand strands of hair