Browse over 10,000 Electronics Projects



Perhaps the simplest optical instrument is the lens magnifier. Without optical aid, we cannot see things close up. The eye will simply not focus closer than about 0.25 m (unless you are nearsighted)
But an object places just inside the focal point of a converging lens will produce a large virtual image that can be viewed more easily. Let’s look at our Convex Lens again.



The standard optical microscope consists of two lenses (each can be a compound lens). By placing the object to be observed very close to the focal point of the first or objective lens, a larger real (but inverted) image will be produced. This real image is then observed with a second lens, the eyepiece, which acts as a magnifier to make the image even larger. If you wear eyeglasses or reading glasses, removing them will allow you to view the microscope properly.

Visit Here for more.