1800多年前,东汉科学家张衡发明地动仪时,为什么让8只蟾蜍张口接龙珠?浙江象山一名有心的蟾蜍养殖者,在对蟾蜍连续观察研究两年多后,提出了自己的猜想:蟾蜍不但是中国古代的吉祥物之一,而且是一种对天气变化极其敏感的动物,正是这一特征,让张衡选它作为地动仪的组件。 More than 1,800 years ago, the Eastern Han scientist Zhang Heng invented the device, why 8 toad jabs make a dragon ball? Zhejiang Xiangshan a determined toad farmer in the toad continuous observation and study more than two years later, put forward his own guess: toad is not only One of ancient Chinese mascots, but also a kind of animal that is extremely sensitive to the changes of the weather. It is this characteristic that Zhang Heng chose as a component of the seismograph.