How to calculate total magnification of a microscope. If your microscope only uses an eyepiece this is all you need to do but if your microscope uses both an eyepiece and an objective lens multiply the eyepiece magnification by the objective magnification to find the total magnification before dividing the field number. The total magnification of 40 means that the object appears forty times larger than the actual object. Locate the power of the eye piece which is usually 10x.
Microscopes use lenses to magnify objects. Total magnification equal to the power of the ocular lens multiplied by the power of the objective lens being used magnifies 45x total magnification is 450x 10 x 45. How is optical magnification calculated.
Total magnification optical magnification x digital magnification. It is typically written on the top of the microscope on the eyepiece. The formula for calculating microscope on screen magnification is.
10 x 4 40x magnification eyepiece magnification x objective lens magnification stereo microscope magnification. If the magnification power of the ocular lens is 10x and that of the objective lens is 4x total magnification is 40x. Optical magnification objective magnification x c mount adapter magnification.
The field of view is defined by a fixed because it cannot be changed circular opening diaphragm of the eyepiece which depending on its design can be either between the eyepiece lenses or. If you are using a stereo microscope with 10x eyepieces and the zoom knob is set to 4x the total magnification formula would look like this. How to calculate magnification of a microscope.
To figure the total magnification of an image that you are viewing through the microscope is really quite simple. To determine the total magnification of an image viewed through a microscope multiply the power of the eyepiece or ocular lens by the power of the objective lens. Click here to see image click here to see image click here to see image.
This one is fairly simple. Its magnification 10 being the most common and the field number. How to calculate total magnification basic microscope design.
If the eyepiece magnification of a microscope is 10x and the objective lens in use has a magnification of 4x calculate the magnification of the microscope. The eyepiece field number abbreviated as fn and sometimes as fov is the diameter of the field view in millimeters measured at the intermediate real image plane. Finding the magnification of each lens requires examining the casing of each lens.