Parts of a Microscope

Question 1

The V-shaped or u-shaped structure that supports the whole instrument

Answer 1

Base

Question 2

The vertical extension of the base to which the arm is attached

Answer 2

Pillar

Question 3

Thethe curved basic part of the microscope to which
the base, body and stage are attached. It serves as the
handle of the microscope and provides support for the
optical parts.

Answer 3

Arm

Question 4

movable parts which facilitate tilting of the
microscope.

Answer 4

Inclination joint

Question 5

a platform upon which the slide containing the specimen is
placed. It is provided with a central aperture that allows light to
pass from below to the object of the study.

Answer 5

Stage

Question 6

a pair of metals that holds the slide in place. Some
microscopes are provided with a mechanical stage which moves
the specimen forward, backward or sideward by means of
mechanical screw.

Answer 6

stage clips

Question 7

a hollow cylinder in front of the upper part of the arm
that serves as housing for the lenses. It serves as a passageway of light from the objective to the eyepiece.

Answer 7

Body tube

Question 8

the smaller cylinder attached to the top of the body
tube and holds the ocular or eyepiece..

Answer 8

Draw tube

Question 9

a fixed plate attached to the base of the body tube
and situated above the revolving nosepiece. It protects the
objectives from dust and dirt.

Answer 9

Dust shield

Question 10

a rotary head attached to the base of the body
tube and holds the objectives. It also facilitates the shifting of the objectives.

Answer 10

Revolving nosepiece

Question 11

Used to adjust the objectives when focusing which
when turned clockwise and counter clockwise; lowers or raises the body tube.

Answer 11

Adjustment Knobs

Question 12

these are the upper, larger knobs
used for faster movement of the body tube when focusing the low power objective.

Answer 12

Coarse Adjustment Knobs or Screws

Question 13

these are the lower, smaller knobs used for final
focusing under high power objective and viewing at different levels.

Answer 13

Fine Adjustment Knob

Question 14

usually two faced where one surface is plain or flat and concave on the other side. It is used to reflect light through the object, lenses and into the eyes. The plain surface is used when the source of light is very bright while the concave mirror is used with the low intensity if light of natural or artificial source. Its frame is held by the mirror rack or fork.

Answer 14

Mirror

Question 15

an optical part under the stage to which is
either fixed or provided with adjustment for lowering or raising until the field is evenly illuminated. It is used to illuminate,
condense or concentrate the reflected light from the mirror to the object being examined.

Answer 15

Abbe condenser

Question 16

a plate that is supported with numerous
apertures of varying sizes to regulate the amount of light that
enters the condenser.

Answer 16

Iris diaphragm

Question 17

the detachable tube situated on the top of
the draw tube equipped with one set of lenses that magnifies the object several times. It may be provided with a dark pointer which is used to point a specific part of the specimen being focused.

Answer 17

Eyepiece or Ocular

Question 18

The lens nearest to the object being examined whereas
the lens closest to the eye is termed the ocular (the eyepiece).

Answer 18

Objectives

Question 19

if there are four objectives present, this the shortest
cylinder with the widest lens opening but with the lowest
magnification. It is used to observe wider field of object.

Answer 19

Scanner

Question 20

the shortest tube with large lens opening which has a magnification of 10X. It is used to observe the general outline of the object under study and to locate various parts of the specimen.

Answer 20

Low Power Objective (LPO)

Question 21

the longer tube with smaller lens
opening which has a magnification of 40X. It is used in observing
the details of the specimen being studied.

Answer 21

High Power Objective (HPO)

Question 22

the longest tube with a very small lens opening and has a magnification varying from 90-100X. A drop of cedar wood oil is placed on the specimen and the objective must be lowered very close to the slide until the front touches the oil. This prevents the refraction or dispersing of light

Answer 22

Oil Immersion Objective (OIO)