Yahoo奇摩字典 網頁搜尋

搜尋結果

1. Oxford Dictionary

   Newtonian telescope

   • n.
     a reflecting telescope in which the light from the main mirror is deflected by a small flat secondary mirror set at 45°, sending it to a magnifying eyepiece in the side of the telescope.

   • noun: Newtonian telescope, plural noun: Newtonian telescopes