Term
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Definition
| contains a lens that magnifies about 10x |
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Term
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Definition
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Term
| high-power objective lens |
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Definition
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Term
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Definition
| separates the eyepiece lens from the objective lens |
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Term
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Definition
| moves the stage for focusing with the low-power objective lens |
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Term
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Definition
| moves the stage for focusing with the high-power objective lens |
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Term
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Definition
| supports the slide being used |
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Term
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Definition
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Term
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Definition
| controls the amount of light passing through the opening in the stage |
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Term
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Definition
| provides a light source to view the slide |
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Term
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Definition
| supports the body tube & stage |
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Term
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Definition
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Term
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Definition
| holds the objectives and can be turned to change from one magnification to another |
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Term
| compound light microsscope |
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Definition
| a microscope that uses light to magnify small objects so that they can be seen easily by using lenses and produce a flat image |
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Term
| transmission electron microscope |
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Definition
| a microscope that sends a beam of electrons through a specimen to produce a flat image (cannot view living things) |
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Term
| scanning electron microscope |
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Definition
| a microscope that sends a beam of electrons at a specimen, which bounce off and produce a 3-D image |
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Term
| wet mount slide instructions |
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Definition
1. Gather materials (slide, coverslip, water or liquid)
2. Place a drop of water or liquid on the center of a clean slide
3. Place the specimen in the water (can switch with step two if needed)
4. Place coverslip at an angle on the edge of the water and "drop" over specimen
5. Observe, be careful not to get fingerprints on it |
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Term
| total magnification formula |
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Definition
| ocular lens/eyepiece * objective lens |
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Term
| magnification vs. resolution |
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Definition
magnification: the amount of times an object is enlarged
resolution: clarity of an image |
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Term
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Definition
1. Make sure low power objective lens is over viewing area
2. Turn on light
3. Place slide under the stage clips
4. Use coarse adjustment knob to focus on specimen. Adjust the diaphragm to get a good lighting.
5. Use the fine adjustment knob to "fine tune" the image. Do not turn it too much.
6. Move to other powers/objective lens
7. If you lose the image, go to low power and find it, and then repeat the steps. |
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Term
| how to carry and put away microscope |
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Definition
1. Carry it by the arm and base
2. ALWAYS keep it on a flat surface and away from the edge of the table
3. Shut off the light when microscope is not in use.
4. Notify a teacher or adult if a slide breaks or if the microscope doesn't work.
5. When finished, put the objective lens on low power, remove and clean the slide, wrap the cord around the microscope, and put it away. |
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Term
| how does an image appear under the microscope |
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Definition
| (refer to e lab) it is upside down and backwards. When moved, it appears to move in the opposite direction (ex. up=down, down=up, right=left, left=right) |
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