Microscopes are composed of a magnifying lens and an eyepiece that join together in a tube, a illuminated stage where the object being observed is placed and a tripod to secure the optical components. The microscope's source of light is generally a small bulb attached to the tripod of lenses that can be adjusted (lens or system of lenses near the bulb) and fixed behind the illuminated area. The microscope's condenser is a complicated system of lenses or mirrors that reproduce the light on the surface of the object. The microscope's lens amplifies the object so that this magnified image can be viewed in the eyepiece. Microscopes also have two eyepieces to allow the object to be viewed with both eyes.