Parts of the Microscope

Question 1

The metal parts of the microscope

Answer 1

Mechanical parts

Question 2

The magnifying parts of the microscope bearing the lenses

Answer 2

Optical parts

Question 3

This is considered the foot of the microscope for support. It may be U, V or Y in shape

Answer 3

Base

Question 4

This is the part connecting the base to the other parts of the microscope

Answer 4

Pillar

Question 5

This is the point where a screw is placed at the side of the pillar for tilting the microscope. This part is missing in some modern microscopes with tilted draw tubes

Answer 5

Inclination Joint

Question 6

This is a platform attached to the lower portion of the arm. This is an area on which the slide with the specimen is placed. It is provided with one or two clips to hold the slide in place. It has a hole in the center for the passage of light from the light source

Answer 6

Stage

Question 7

This is a curved structure connecting the lower and upper parts of the microscope. This also serves as the handle in carrying the microscope

Answer 7

Arm

Question 8

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

Answer 8

Body tube

Question 9

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

Answer 9

Draw tube

Question 10

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

Answer 10

Dustshield

Question 11

This is the bigger wheel of the two knobs at one side of the arm, This is used to move the body tube up or down. The screw is also used to focus the general image of the object under the low power objective

Answer 11

Coarse adjustment screw/knob

Question 12

This is the smaller screw in the arm which is used when focusing the detailed portion of the object under the high power objective

Answer 12

Fine adjustment screw/knob

Question 13

This is the lens found at the opening of the draw tube. This magnifies the secondary image of the object. The magnification varies from 5x to 15x

Answer 13

Eyepiece or ocular

Question 14

These magnify the primary image of the specimen or object

Answer 14

Objectives

Question 15

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

Answer 15

Low power objective (LPO)

Question 16

Its magnification varies from 45x - 60x

Answer 16

High power objective (HPO)

Question 17

Magnification varies from 90x - 100x and therefore gives more detailed image. This part is used when examining bacteria or microorganisms. It uses special oil like cedar wood oil

Answer 17

Oil immersion objective (OIO)

Question 18

This is attached to the pillar by a mirror fork, and is seen just below the stage. It has two surfaces: the plane or flat mirror which is used with daylight illumination (high intensity light), and concave surface with artificial light (low intensity light)

Answer 18

Mirror

Question 19

Consists of the iris diaphragm and abbe condenser

Answer 19

Substage

Question 20

Regulates the amount of light needed to obtain a clearer view of the object. It has a protruding metal which can be moved to increase or decrease the diameter of its openings

Answer 20

Iris diaphragm

Question 21

Extra: A substitute of a circular disc with several openings of various diameters

Answer 21

Wheel diaphragm

Question 22

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

Answer 22

Abbe condenser

Question 24

Yellow band = 10x

Answer 24

Low power objective (LPO)

Question 25

Blue band = 40-60x

Answer 25

High power objective (HPO)

Question 26

White band = 100x

Answer 26

Oil immersion objective (OIO)