microscope parts + functions

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19 Terms

1
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ocular lens

eyepiece with a lens that magnifies the image from the objective lens 10x.

<p>eyepiece with a lens that magnifies the image from the objective lens 10x.</p>
2
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body tube

connects ocular and objective lenses, aligning light to the viewer's eye.

<p>connects ocular and objective lenses, aligning light to the viewer's eye.</p>
3
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arm

connects the body tube to the base. one hand should be around this when carrying a microscope.

<p>connects the body tube to the base. one hand should be around this when carrying a microscope.</p>
4
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coarse adjustment knob

first knob used for large focus adjustments, used only under low power.

<p>first knob used for large focus adjustments, used only under low power.</p>
5
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fine adjustment

the second knob you should use under higher power for exact focusing.

<p>the second knob you should use under higher power for exact focusing.</p>
6
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rotating/revolving nosepiece

holds the objective lens and can be rotated to change the magnification.

<p>holds the objective lens and can be rotated to change the magnification.</p>
7
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objective lenses

adjustable lens system that permits the use of a low power lens, a medium lens, or a high power lens

<p>adjustable lens system that permits the use of a low power lens, a medium lens, or a high power lens</p>
8
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scanning power

this objective lens provides the lowest magnification, 4x

<p>this objective lens provides the lowest magnification, 4x</p>
9
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low power

this objective lens provides a low magnification, or power, 10x

<p>this objective lens provides a low magnification, or power, 10x</p>
10
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high power

this objective lens provides the highest magnification, 40x

<p>this objective lens provides the highest magnification, 40x</p>
11
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stage

where you place the slide containing the specimen; it contains a hole that allows light to pass through the stage and onto the specimen.

<p>where you place the slide containing the specimen; it contains a hole that allows light to pass through the stage and onto the specimen.</p>
12
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stage clips

holds the slides in place on the stage for viewing.

<p>holds the slides in place on the stage for viewing.</p>
13
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diaphragm

adjusts amount of light reaching the specimen.

<p>adjusts amount of light reaching the specimen.</p>
14
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base

supports the weight of the microscope. contains the electronics and the light source.

<p>supports the weight of the microscope. contains the electronics and the light source.</p>
15
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light source / illuminator

an electric source of illumination or a mirror used to direct light upward.

<p>an electric source of illumination or a mirror used to direct light upward.</p>
16
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condenser lens

the lens under the stage that focuses light from the illuminator through to the hole in the stage

<p>the lens under the stage that focuses light from the illuminator through to the hole in the stage</p>
17
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how to carry a microscope

always carry the microscope by:
the arm with the other hand supporting the base

<p>always carry the microscope by:<br /> the arm with the other hand supporting the base</p>
18
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total magnification =

ocular lens magnification x objective lens magnification

example: 4 × 10 = 40x → total magnification is 40x

19
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oil immersion objective

an objective lens that has the greatest magnification and has a total magnification of 1000x (10x eyepiece lens x the 100x objective equals 1000).