Difference between revisions of "Light Microscope"
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: The parts of the [[microscope]] are shown in the diagram below: | : The parts of the [[microscope]] are shown in the diagram below: | ||
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*'''Eyepiece Lens''' - This is the lens that you look down. | *'''Eyepiece Lens''' - This is the lens that you look down. | ||
Revision as of 13:17, 2 September 2018
Contents
Key Stage 2
Meaning
A picture of a microscope.
A microscope is piece of equipment used to make small objects appear larger.
About Microscopes
- Microscopes can be used to see things too small for our eyes to see.
- Micro means 'small' and scope means 'small'.
Key Stage 3
Meaning
A microscope is piece of equipment used to make small objects appear larger.
About Microscopes
- Microscopes use convex lenses to magnify an image.
- The parts of the microscope are shown in the diagram below:
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- 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.
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.