Microscope

Question 1

When was the first compound microscope?

Answer 1

1590

Question 2

He used a compound microscope to observe pores in cork.

Answer 2

Robert Hooke

Question 2

He is the one who termed the word cells.

Answer 2

Robert Hooke

Question 3

He is the 1st to see single-celled organisms.

Answer 3

Antoine Van Leeuwenhoek

Question 4

Antoine Van Leeuwenhoek found single-celled organisms in _____.

Answer 4

Water

Question 5

First microscope, and is most widely used.

Answer 5

Compound light microscope

Question 6

It can have one or two lens. 

Answer 6

Compound light microscope

Question 7

Compound light has around what magnification?

Answer 7

2000x

Question 8

Used to observe VERY small objects: viruses, DNA, parts of cells.

Answer 8

Electron microscope

Question 9

It uses beams of electrons instead of light.

Answer 9

Electron microscope

Question 10

It is more powerful than compound light microscope.

Answer 10

Electron microscope

Question 11

Can magnify up to 100,000x (type of electron microscope).

Answer 11

Scanning Electron Microscope (SEM)

Question 12

Can magnify up to 250,000x (type of electron microscope).

Answer 12

Transmission Electron Microscope (TEM)

Question 13

These are the metal parts of the microscope.

Answer 13

Mechanical Parts

Question 14

The “foot” of the microscope (acts as a support). This may be U, V, or Y in shape.

Answer 14

Base

Question 15

It connects the base to the other parts of the microscope.

Answer 15

Pillar

Question 16

This is the point where a screw is placed at the pillar’s side for tilting the microscopes.

Answer 16

Inclination Joint

Question 17

The platform attached to the lower portion of the arm. The specimen is placed in this area.

Answer 17

Stage

Question 18

The curved structure that connects the lower and upper parts of the microscope. It also serves as the microscope’s handle.

Answer 18

Arm

Question 19

It is a big cylindrical structure which allows a considerable distance between the lenses of the ocular or eyepiece and objectives.

Answer 19

Body Tube

Question 20

This is a smaller tube which holds the eyepiece or ocular lens.

Answer 20

Draw Tube

Question 21

This is the circular structure attached to the area below the body tube that protects the objectives from dust.

Answer 21

Dust Shield

Question 22

This is the bigger wheel at one side of the arm.

Answer 22

Coarse Adjustment Screw/Knob

Question 23

This is used to move the body tube up & down.

Answer 23

Coarse Adjustment Screw/Knob

Question 24

The screw is also used to focus the general image of the object under the LPO.

Answer 24

Coarse Adjustment Screw/Knob

Question 25

This is the smaller screw at one side of the arm.

Answer 25

Fine Adjustment Screw/Knob

Question 26

It is used to focus the detailed portion of the object under the HPO.

Answer 26

Fine Adjustment Screw/Knob

Question 27

These are the magnifying parts of the microscope bearing the lenses.

Answer 27

Optical Parts

Question 28

This is the lens found at the opening of the draw tube. This magnifies the secondary image of the object.

Answer 28

Eyepiece/Ocular

Question 29

Its magnification varies from 5x - 15x.

Answer 29

Eyepiece/Ocular

Question 30

These magnify the primary image of the specimen/object.

Answer 30

Objectives

Question 31

With 4x - 10x, the object is seen in its general view.

Answer 31

Low Power Objective (LPO)

Question 32

This has greater magnification than the LPO, varying from 45x - 60x. This gives more detailed magnification or image.

Answer 32

High Power Objective (HPO)

Question 33

Magnification varies from 90x - 100x, giving a more detailed image than the HPO.

Answer 33

Oil Immersion Objective (OIO)

Question 34

This is used when examining bacteria or microorganisms. This uses a special oil (like cedar wood oil).

Answer 34

Oil Immersion Objective (OIO)

Question 35

This is attached to the pillar by the mirror fork, and is seen below the stage.

Answer 35

Mirror

Question 36

Used with daylight illumination (high intensity light).

Answer 36

Plane/Flat Mirror

Question 37

Uses artificial light (low intensity light).

Answer 37

Concave Surface

Question 38

Iris diaphragm and abbe condenser are parts of the?

Answer 38

Substage

Question 39

This regulates the amount of light to obtain a clearer view of the object. This is a round structure beneath the stage.

Answer 39

Iris Diaphragm

Question 40

It is provided with a protruding metal which can be moved to increase/decrease the opening’s diameter.

Answer 40

Iris Diaphragm

Question 41

In other types of microscope, the iris diaphragm is not present; rather, it is substituted by a circular disc with several openings called _____ _________.

Answer 41

Wheel Diaphragm

Question 42

This is a lens system which concentrate light rays upon the object.

Answer 42

Abbe Condenser

Question 43

Increase of an object’s apparent size.

Answer 43

Magnification (x)

Question 44

Power to show details clearly.

Answer 44

Resolution