Magnification and Microscope

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  • Created by: MiaT212
  • Created on: 10-02-19 16:10

Magnification :)

MAGNIFICATION

- 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.

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Magnification and Microscopes

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.

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