CH. IX] MAGNIFICATION OF OBJECTIVES AND OCULARS 305 





 INDEPENDENT MAGNIFICATION OF OBJECTIVES AND OCULARS 



477. Independent magnification of an objective. The inde- 

 pendent magnification of an objective is like that of a simple micro- 



Image 



Object 



FIG. 181. REAL IMAGE SHOWING THAT THE SIZE DEPENDS UPON THE .RELATIVE 

 DISTANCE OF OBJECT AND IMAGE FROM THE CENTER OF THE LENS. 



Object The object of which an image is to be formed. 



cl Center of the lens. 



i This shows that the object is i unit long and its distance from the center of 

 the lens is also i . 



1234 The image is 4 units distant from the center of the lens, and the image 

 is consequently 4 units long. 



