Microscope

Question 1

is the ability of a microscope to produce an image of an object at a scale larger (or even smaller) than its actual size. it also serves a useful purpose only when it is possible to see more details of an object in the image than when observing the object with the unaided

Answer 1

Magnification

Question 2

is used to describe the ability of a microscope to distinguish details of a specimen or sample. In other words, the minimum distance between 2 distinct points of a specimen where they can still be seen by the observer or microscope camera as separate entities.

Answer 2

resolution

Question 3

is the diameter of the viewing field measured at an intermediate plane of angle. To put it simply, it’s the diameter of the circular area you see when you look through the eyepiece of the microscope.

Answer 3

field of view

Question 4

As the magnification increases, the field of view?

Answer 4

decreases

Question 5

STRUCTURAL PARTS OF THE MICROSCOPE:

Answer 5

1. HEAD
2. ARM
3. BASE

Question 6

is a cylindrical metallic tube that holds the eyepiece lens at one end and connects to the nose piece at other end.

Answer 6

head

Question 7

head is also called a?

Answer 7

body tube or eyepiece tube

Question 8

It connects the eyepiece lens to the objective lens.

Answer 8

Head

Question 9

What type of microscope that the head are adjustable so that the viewer can adjust the eyepiece for maximum visualization.

Answer 9

binocular microscopes

Question 10

This is the part connecting the base to the head and the eyepiece tube to the base of the microscope. It supports the head of the microscope and is also used when carrying the microscope.

Answer 10

ARM

Question 11

is the lowermost part of the microscope that supports the entire microscope structure. It provides stability for the microscope, Illuminators, light switches, and electrical wiring systems are fitted in the base.

Answer 11

base

Question 12

is closest to the viewer’s eye. They are located at the top of the microscope. This part is used to look at the specimen.

Answer 12

The eyepiece (ocular Lens)

Question 13

lenses come in different magnification powers from

Answer 13

5x to 30x

Question 14

the most common ocular lenses are of?

Answer 14

10x or 15x magnification

Question 15

It carries the eyepiece just above the objective lens.

Answer 15

eyepiece holder

Question 16

In some microscopes, such as the binoculars, the ? is flexible and can be rotated for maximum visualization for variance in distance.

Answer 16

eyepiece tube

Question 17

is a movable circular structure that houses all the objective lenses.

Answer 17

nose piece

Question 18

nose piece is also called the?

Answer 18

REVOLVING TURRET

Question 19

It is connected to the body tube and lies just above the stage. It can be rotated clockwise or counterclockwise to increase or decrease the magnification.

Answer 19

Nose piece

Question 20

is the lens that is closest to the specimen. They are fitted on the nosepiece.

Answer 20

objective lens

Question 21

A standard microscope has 3 to 4 objective lenses of different magnifying powers:

Answer 21

4X, 10X, 40X, and 100X.

Question 22

are color-coded and are of different sizes. Size and color depend on the power of the lens.

Answer 22

Objective lenses

Question 23

The smallest lens is of the?

Answer 23

lowest power

Question 24

the longest lens will be of the

Answer 24

highest power

Question 25

In most optical microscopes, objective lenses with 100X or more magnification are of?

Answer 25

oil immersion type.

Question 26

provides the lowest magnification power of all objective lenses.

Answer 26

scanning objective lens ( red )

Question 27

4x is a common magnification for scanning objectives and, when combined with the magnification power of a 10x eyepiece lens, a 4x scanning objective lens gives a total magnification of?

Answer 27

40x

Question 28

The name " ? " of objective lens comes from the fact that they provide observers with about enough magnification for a good overview of the slide, essentially a "scan" of the slide

Answer 28

scanning

Question 29

has more magnification power than the scanning objective lens, and it is one of the most helpful lenses when it comes to observing and analyzing glass slide samples.

Answer 29

low power objective lens ( yellow )

Question 30

The total magnification of a low power objective lens combined with a 10x eyepiece lens is?

Answer 30

100x magnification

Question 31

high-powered objective lens (also called " ? " lens)

Answer 31

high dry

Question 32

is ideal for observing fine details within a specimen sample.

Answer 32

high-powered objective lens ( blue )

Question 33

The total magnification of a high-power objective lens combined with a 10x eyepiece is equal to?

Answer 33

400x magnification,

Question 34

provides the most powerful magnification

Answer 34

oil immersion objective lens

Question 35

What is oil immersion objective lens magnification when combined with a 10x eyepiece?

Answer 35

magnification total of 1000x

Question 36

Without adding a drop of ?, the oil immersion objective lens will not function correctly, the specimen will appear blurry, and you will not achieve an ideal magnification or resolution.

Answer 36

immersion oil

Question 37

used for focusing the image under low power magnification. It is a larger knob and is used to move the stage up or down very rapidly. The stage is raised or lowered rapidly

Answer 37

Coarse Adjustment Knob

Question 38

is used for fine adjustment. It is a smaller knob and is used to move the stage up or down very slowly. It is used to sharpen the image. It is mostly used while viewing under high power.

Answer 38

Fine Adjustment Knob

Question 39

This is the section in which the specimen is placed for viewing. They have stage clips that hold the specimen slides in place.

Answer 39

STAGE

Question 40

most common stage is the ?, which allows the control of the slides by moving the slides using the mechanical knobs on the stage instead of moving them manually

Answer 40

mechanical stage

Question 41

Holds the slide in place on the stage so it doesn't move while you're viewing the specimen.

Answer 41

STAGE CLIPS

Question 42

are the control knobs used to move the stage mechanically.

Answer 42

Stage Control Knobs

Question 43

There are two stage control knobs;

Answer 43

one for moving left and right and the other for moving forward and backward.

Question 44

These are lenses that are used to collect and focus light from the illuminator into the specimen. They are found under the stage next to the diaphragm of the microscope. They play a major role in ensuring clear, sharp images are produced with a high magnification of 400X and above.

Answer 44

CONDENSER

Question 45

More sophisticated microscopes come with an ?, that has a high magnification of about 1000x

Answer 45

Abbe condenser

Question 46

It's also known as the iris.

Answer 46

DIAPHRAGM

Question 47

It is found under the stage of the microscope, and its primary role is to control the amount of light that reaches the specimen. It's an adjustable apparatus, hence controlling the light intensity and the size of the beam of light that gets to the specimen.

Answer 47

DIAPHRAGM

Question 48

is the light source for a microscope, typically located in the base of the microscope.

Answer 48

Illuminator

Question 49

Make sure all backpacks and unnecessary materials are out of the aisles and off the tops of the desks.

Answer 49

TABLE PLACEMENT

Question 50

Install the microscope on a sturdy, level table. Equipment and instruments which generate vibrations should not be placed on or near this table. The height of the table should be convenient for the user. As an alternative or in addition, an adiustable stool should be made available to make

Answer 50

TABLE PLACEMENT

Question 51

Use only ? For cleaning lenses

Answer 51

lens paper or gauze and cleaning solution

Question 52

Lenses must be clean for resolution. Use only lens paper or gauze and cleaning solution. Never use your finger, handkerchief, paper towels or spit to clean the lenses. Do not remove any parts for cleaning; it only allows dust to enter the microscope

Answer 52

CLEANING

Question 53

1. Turn off light & center mechanical stage. 2. Position the nosepiece so that the lowest scanning (4X) objective is in place. 3. Remove the slide from the stage, put in proper place. 4. Clean the stage and lenses with gauze and lens cleaner, wipe off any oil. 5. Wrap the cord around the arm. CAREFULLY carry with two hands and GENTLY place the microscope in the proper cabinet.

Answer 53

PUTTING AWAY