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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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types of microscopes |
• compound light microscope • electron microscope • scanning electron microscope |
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function of microscope arm |
holds the tube in place & used to carry the microscope |
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function of the base 🔬 |
provides a stable platform for the microscope |
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function of the tube |
separates the outer lens from the affective lens |
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function of the stage |
supports slide for observation |
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stage clips |
holds slide in position |
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function of the diaphragm |
allows light to pass through the specimen |
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function of the light source |
supplies the light to pass through the specimen and the lenses |
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function of the revolving nose piece |
holds the objective lenses |
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function of the objective lenses |
magnify the specimen by 4x,10x, or 40x ( numbers can change depending on the microscope) |
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function of the eye piece / ocular lens |
magnifies the specimen by 10 times |
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function of the course adjustment knob |
moves the stage up/down to focus on the specimen (use 1st) |
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function of the fine adjustment knob |
sharpens the image (use 2nd) |
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magnification |
1st by the objective lens 2nd by the ocular lens • multiply the magnification of the objective lens by the magnification of the ocular lens. |
a specimen is magnified by the 2 lenses in a compound light microscope. |
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electron microscope |
uses beams of electrons instead of light. |
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what is an image produced with an electron microscope called |
an electron micrograph |
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transmission electron microscope |
can magnify up to 1,500,000 times. beams of electrons only pass through very thin specimens. can’t be used to observe living cells - only dead cells. |
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scanning electron microscope |
can magnify up to 300,000 x. produces 3D images of cell surfaces |
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electron microscope 2 |
new tech of scanning tunneling microscope and atomic force microscope produced images of molecules within cells |
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