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: A '''light microscope''' cannot be used to view anything smaller than about 0.2 [[micrometre]]s.
: '''Light microscopes''' can be used to view objects as small as [[bacteria]] but cannot be used to view [[virus]]es.
{| class="wikitable"|[[File:MicroscopeDiagram.png|center|500px]]|}*'''Eyepiece Lens''' - This is the lens that you look down.*'''Coarse Focussing Wheel''' - This moves the stage by a large amount to bring the image into focus (make the image clear and not blurry).*'''Fine Focussing Wheel''' - This moves the stage by a small amount to focus the image carefully (make the image clear and not blurry).*'''Objective Lens''' - This is the lens next to the specimen that magnifies the image.*'''Stage''' - This where the sample is placed.*'''Light Source''' - This can be a lamp or a mirror used to shine light through the specimen.
===Magnification Equation===
Image Size = Object Size X Magnification
:<math>Magnification = \tfrac{ImageSize}{ObjectSize}</math>
===Preparing Specimens===
To see an object clearly with a '''microscope''' a [[specimen]] must be prepared first.
: 1. A small [[specimen]] is placed on a glass [[slide]].
: 2. A [[dye]] is used to colour the specimen so it can be seen more easily under the '''microscope'''.
: 3. A cover slip is placed on the [[specimen]] to flatten it.
: 4. Tissue is used to absorb any excess [[dye]].
: 5. The glass [[slide]] is placed on the '''microscope''' stage.