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33 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is the proper way to carry a microscope? |
One hand holding the arm, the other hand supporting base |
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What can be used up clean the ocular and objective lens? |
Lens paper |
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How does one bring different objectives into place? |
Rotate the nosepiece |
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How does one center the slide over the light hole? |
Turning the mechanical stage adjustment knobs |
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What parts of the microscope can be used to adjust light intensity? |
1. Diaphragm lever 2. Rheostat knob |
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What is used on the slide you wish to observe in 100X objection? |
Immersion oil |
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What happens to the light intensity as magnification increases? |
It must be increased |
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What objectives can be used once oil has been added to a slide? |
100X 10X 4X |
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Formula for total magnification |
Objective Magnification x Ocular Magnification |
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Total magnification of scanning objective |
4x10= 40 |
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Total magnification of low power objective |
10x10= 100 |
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Total magnification of high power objective |
40×10= 400 |
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Total magnification of oil immersion objective |
100×10= 1000 |
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Resolving power |
Aka resolution The microscope's ability to distinguish close together objects and fine detail |
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How is resolution of light microscopes improved? Who discovered this? |
By adding more light Ernest Abbe |
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What is the purpose of immersion oil? |
It prevents the loss of light rays due to its refractive index (same as glass) |
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Parfocal |
What most of our microscopes are. The lenses are adjusted so that when you are looking at a specimen in one objective, it should remain mostly in focus when you switch to another objective |
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When you move the slide to the right, what happens? Why is this? |
The image moves to the left Due to the setup of the lenses, images appear inverted |
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Depth of field |
One must focus up and down through the slide to find what one is looking for when dealing with a thick specimen |
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Power switch |
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Rheostat |
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Course focus arrangement knob |
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Fine focus adjustment knob |
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Mechanical stage control |
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Base |
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Light source |
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Condenser |
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Diaphragm lever |
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Stage |
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Slide holder |
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Oil immersion objective lens |
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Nosepiece |
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Ocular lens |
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