望远镜的倍率 望远镜倍数与数字X数字是怎,计算是什么意思？
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例如，某天文望远镜的物镜焦距为120cm，目镜焦距为1.5cm，则此组合条件下，望远镜的倍率为120÷1.5=80（倍）。
这也就能解释，为什么历史上科学家们为了获得高倍率的天文望远镜，曾经将望远镜的镜筒长度做到了几十米，用的时候甚至要用吊车（滑轮组）竖起来用。
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