arc minute造句

• And one arc minute equals 60
  而一分可再细分为60
• People usually think that larger telescope will magnify the object more . the magnification is the ratio of the apparent sizes of the object . for example , if the angular size of the object is one arc minute and through a telescope , its apparent size becomes 30 arc minutes , then we say the magnification is 30
  很多人以为大型望远镜可以把天体放得更大，事实上望远镜要获得很高的倍率是很容易的只要改用较短焦距的目镜便可以了，但就算是大型望远镜，倍率也极少超过500倍，一般都只是使用100至200倍。