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Parts and Functioning of a Compound Microscope: Magnification, Focusing, and Safety, Exams of Biology
An illustrated guide to the components of a compound microscope, explaining their functions and how to use them for magnification and focusing. It also covers microscope safety precautions.
What you will learn
- What safety precautions should be taken when using a compound microscope?
- What is the function of the eyepiece in a compound microscope?
- What is the role of the diaphragm in a compound microscope?
- How does the coarse focus knob work in a compound microscope?
- How do you change objective lenses in a compound microscope?
Typology: Exams
2021/2022
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Download Parts and Functioning of a Compound Microscope: Magnification, Focusing, and Safety and more Exams Biology in PDF only on Docsity!
Microscope
Cartoon
Eyepiece
Coarse Focus
Fine Focus
Objective Lenses
Stage Light Source
Stage Clips Arm
Base
Diaphragm
Parts of a compound microscope:
- Eyepiece – what you look into; contains a 10X lens - Objective lenses - three separate lenses that have different powers of magnification (4x, 10x, 40x)
- Light source - shines light through the slide - Diaphragm - controls the amount of light available - Arm – supports the eyepiece & objective lenses - Base – bottom of the microscope
Microscope Magnification
For Example
•If the eyepiece has a magnification of 10X and you are using the 4x objective lens, what is the total magnification? 10 x 4 = 40 This means the image you see through the eyepiece while using the 4x objective lens is 40 times larger than real life.
How to View a
Slide with a
Microscope Video
- Set the microscope to the lowest power objective lens.( 4x )
- Use the Coarse Focus Knob to bring the image into focus.
- Change to a higher power objective lenses, if you want to zoom in. ( 10x then 40x )
- Use the Fine Focus Knob to bring the image into focus.
Microscope Safety