The objective and the eyepiece

圖片參考：http://www.chemicool.com/img1/graphics/microsco.gif

In a microscope,

What are the functions of the objective and the eyepiece?

圖片參考：http://physics.2lv.in/blog/sites/default/files/microscope.GIF

http://physics.2lv.in/blog/node/48

圖片參考：http://www.planet-scicast.com/_db/_images/microscope.gif

Microscopes enlarge very small objects. To do this, the object sitsjust outside the focal length of the 'objective lens' (the bottom lens,closest to the object) and this creates an image inside the focallength of the 'eyepiece lens' (the top lens, closest to the eye). Theeyepiece lens then acts like a magnifying glass

http://www.planet-scicast.com/experiment.cfm?cit_id=2681