Virtual Microscope (Overview - Microscope Care)

Question 1

The ___ is the area of the microscope between the tube and the base.

Answer 1

Arm

Question 2

The ____ is the bottom that supports the structure of the microscope.

Answer 2

Base

Question 3

The ___ refers to the main section of the microscope minus the stand (base) or any illuminators. It includes the eyepiece and objective lenses but not the focusing block.

Answer 3

Body

Question 4

The ___ is the larger of two adjustment knobs that moves the objective lens closer to, or farther from, the specimen in large steps.

Answer 4

Coarse Focus

Question 5

A ____ is typically a five-hole disc housed under the stage to adjust the amount of light passing through the stage opening.

Answer 5

Diaphragm

Question 6

The ___, also known as ocular lenses, are typically 10x but also come in 5x, 15x, and 20x varieties. They are what you look through to see your specimen.

Answer 6

Eyepiece Lenses

Question 7

The ___ is the smaller of two adjustment knobs that move the objective lens closer to, or farther from, the specimen in very small steps. It can be used to fine-tune the focus on various parts of a specimen after first using the Coarse Focus to get close.

Answer 7

Fine Focus

Question 8

____ is the structure that holds the objective lenses. Rotating it allows the objective lens to be switched.

Answer 8

Nose Piece or Revolving Nose Piece, also Turret

Question 9

____ is the lens closest to the object being viewed.

Answer 9

Objective Lens

Question 10

What are the different magnifications? (4)

Answer 10

1. Scanning (4x)
2. Low Power (10x)
3. Mid-Power (40x)
4. High-Power (100x)

Question 11

The ____ controls the power to the microscope.

Answer 11

On/Off Switch

Question 12

The ____ is the main, flat plate that holds the slides for observation.

Answer 12

Stage

Question 13

Each lens has a specific, color-coded band that denotes its resolution. Enumerate. (4)

Answer 13

1. Red (4x)
2. Yellow (10x)
3. Blue (40x)
4. White (100x)

Question 14

How to calculate the total magnification of an image?

Answer 14

Multiply the power of the eyepiece by the power of the objective lens.

10x (Eyepiece) x 40x (Objective Lens) = 400x TM

Question 15

Most lenses are used dry or without oil. Some lenses use a special time of oil to increase their resolution called ____, typically used with high powered lenses such as a 100x.

Answer 15

Immerion Oil

Question 16

Once immersion oil is added to a slide, should the objective lens be switched back to a non-oil lens?

Answer 16

No. The objective lens should not be switched back to a non-oil lens.

Question 17

How to properly hold a microscope?

Answer 17

Grip the arm firmly with one hand while placing the other underneath the base of the device for support.

Question 18

How to properly clean a lens?

Answer 18

Never touch a lens with your bare fingers, oil from the fingers may smudge or the fingers may leave scratches. If to clean a lens, use appropriate lens tissue.

Question 19

How to properly put a microscope back in storage?

Answer 19

1. Rotate the nosepiece back to its lowest power setting.
2. Lower the nosepiece to its lowest position on the stage.
3. Neatly wrap power cord.
4. Replace dust cover.

Question 20

____ is a special paper cleaning material specifically designed to be used for cleaning lenses and other glass components without introducing scratches to the surface.

Answer 20

Lens Paper