Light from the lamp passes up through the microscope slide
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What are the lenses called above the stage?
Objective lenses
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What are the magnification of most objective lenses
4x, 10x or 40x
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What does the eyepiece contain?
This contains the eyepiece lens which has a magnification of 10x.
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What are the two types of focussing dials?
The Coarse Focussing dial and the Fine focussing dial.
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What is the first step into using a microscope.
1st we place the slide onto the stage and use the clips to hold it in place.
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What is the second step into using a microscope?
Then select the lowest power objective lens, usually 4x and position the objective lens so it almost the slide. To do that slowly turn the coarse focussing dial.
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What is the risk of looking through the eyepiece whilst positioning the objective lens?
We may damage the slide.
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What is the third step into using the microscope?
We need to slowly turn the coarse focussing dial so this increases the distance between the objective lens and the slide, we do this until the cell focuses.
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What is the fourth step into using a microscope?
We use the fine focussing dial do bring the cells into clear focus.
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How do you calculate the total magnification?
magnification of the eyepiece lens x magnification of the objective lens
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What should you include on your drawing of your cell?
Magnification scale
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What do you measure your image in?
millimeters
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Other cards in this set
Card 2
Front
How does the lamp work?
Back
Light from the lamp passes up through the microscope slide
Card 3
Front
What are the lenses called above the stage?
Back
Card 4
Front
What are the magnification of most objective lenses
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