望远镜是一种用于观察远距离物体的光学仪器,它能把远处的物品在成像空间内按一定倍率放大,使本来无法用肉眼看清的物体变得清晰可见。望远镜能望远,靠的是它前后的两块玻璃镜片:前面一块接近景物的凸形透镜 Telescope is a kind of optical instrument used to observe distant objects. It can magnify the distant objects in the imaging space by a certain magnification, making the objects that can not be seen with the naked eye clearly. Telescopes can be far away, by the two glass lenses before and after it: in front of a close to the scene of the convex lens