浑仪是用来干什么呢?

浑仪有什么作用?
2025-03-16 04:07:03
推荐回答(2个)
回答1:

浑仪是我国古代的一种天文观测仪器。在古代,“浑”字含有圆球的意义。古人认为天是圆的,形状像蛋壳,出现在天上的星星是镶嵌在蛋壳上的弹丸,地球则是蛋黄,人们在这个蛋黄上测量日月星辰的位置。因此,把这种观测天体位置的仪器叫做“浑仪”。
   最初,浑仪的结构很简单,只有三个圆环和一根金属轴。最外面的那个圆环固定在正南北方向上,叫做“子午环”;中间固定着的圆环平行于地球赤道面,叫做“赤道环”;最里面的圆环可以绕金属轴旋转,叫做“赤经环”;赤经环与金属轴相交于两点,一点指向北天极,另一点指向南天极。在赤经环面上装着一根望筒,可以绕赤经环中心转动,用望筒对准某颗星星,然后,根据赤道环和赤经环上的刻度来确定该星在天空中的位置。
后来,古人为了便于观测太阳、行星和月球等天体,在浑仪内又添置了几个圆环,也就是说环内再套环,使浑仪成为多种用途的天文观测仪器。

回答2:

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