- Created by: MiaT212
- Created on: 10-02-19 16:10
- CM into UM (micrometers) = x1000
eg. 1cm =1000 um
- UM into NM (nanometers) = x1000
FINDING THE SIZE OF A CELL
To find the size of a cell, you need to find the diameter of the field of view and then divide by how many cells seen. This will give you the image of a single cell. To find the actual size, divide the image by magnification. Make sure all of your measurements are all the same eg. all mm or all um.
Magnification and Microscopes
Light Microscope- the highest magnification is x1500 but most school microscopes only go upto x400. They cannot distinguish between 200nm.
Electron microscopes- The scanning electron microscope (SEM) works by bouncing electrons off the surface of a specimen that has had an ultrathin coating of a heavy metal, usually gold, applied. The highest magnification is around x 1000000 and it can distinguish between 1nm.