VET 123 Microscopes

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36 Terms

1
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<p>1?</p>

1?

Eyepiece/ocular lens

<p>Eyepiece/ocular lens</p>
2
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<p>2?</p>

2?

Diopter adjustment

<p>Diopter adjustment</p>
3
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<p>3?</p>

3?

Arm

<p>Arm</p>
4
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<p>4?</p>

4?

Coarse adjustment/focus

<p>Coarse adjustment/focus</p>
5
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<p>5?</p>

5?

Fine adjustment/focus

<p>Fine adjustment/focus</p>
6
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<p>6?</p>

6?

On/Off switch

<p>On/Off switch</p>
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<p>7?</p>

7?

Nose piece

<p>Nose piece</p>
8
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<p>8?</p>

8?

Objective lens

<p>Objective lens</p>
9
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<p>9?</p>

9?

Stage clip/slide holder

<p>Stage clip/slide holder</p>
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<p>10?</p>

10?

Stage

<p>Stage</p>
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<p>11?</p>

11?

Condenser

<p>Condenser</p>
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<p>12?</p>

12?

Iris diaphram

<p>Iris diaphram</p>
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<p>13?</p>

13?

Light source/illuminator

<p>Light source/illuminator</p>
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<p>14?</p>

14?

Base

<p>Base</p>
15
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Ocular lens

Located in the eyepiece, and usual magnification is 10x

16
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Objective lens

Located above the stage, and typically has multiple stages of magnification

17
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What are the objective lenses on our microscopes?

4x (red line), 10x (yellow line), 40x (blue line), 100x (white line)

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What is the 4x?

Scanning objective lens

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What is the 10x?

Low power objective lens

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What is the 40x?

High dry objective lens

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What is the 100x?

Oil immersion objective lens

22
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Eyepiece

Portion of the microscope you look in

23
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Eye guard(s)

Located on the eyepiece; reduces ambient light and glare; provides comfort and maximum visual effectiveness; assures proper eye to lens positioning

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Diopter adjustment

Adjusts focus to compensate for the visual differences between your eyes

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How is total magnification calculated?

Multiply objective lens power by ocular lens power

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Stage

Where the slide is placed

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Stage control

Moves stage front to back and side to side

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Stage clips

Holds slide on the stage

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Coarse adjustment

Moves stage up and down in large movements; do not use for objective lenses above 10x (4x and 10x only)

30
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Fine adjustment

To fine tune view and look through the layers of the object in view

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What should you always do when viewing through a microscope?

Keep your hand on the fine adjustment

32
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Light source/illumination

Illuminates the slide

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Condenser/aperture (iris) diaphragms

Adjusts brightness of light source/illumination (typically need higher brightness for higher magnification); Concentrates light with uniform intensity over the entire view-field

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How do objects viewed in a microscope appear?

Reversed and upside down

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What are the steps for putting away the microscope?

Turn light off, move 4x objective into place, lower stage completely, remove slide, clean oil immersion lens if necessary, cover with dust cover

36
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What do you use to clean the microscope lenses?

Lens paper