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General Zoology (Laboratory) > Compound Microscope > Flashcards

Flashcards in Compound Microscope Deck (26)
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1

Composed of ground and polished lenses for the enlargement of the image and objects under study.

Magnifying/Optical parts

2

These are attached to the revolving nosepiece.

Objectives

3

The shortest objective, usually marked 4x.

Scanner

4

A shorter objective, usually with a magnifying power of 4x-10x with a working distance of 16mm.

Low Power Objective (LPO)

5

Usually marked 40x-60x with a working distance of 4mm.

High Power Objective (HPO)

6

Gives the highest magnification with a magnifying power of 97x-100x with a working distance of 1.8mm.

Oil Immersion Objective

7

Found at the top of the microscope which gives the final magnification of the specimen with a magnifying power of 10x.

Ocular or Eyepiece

8

These are found below the stage for light gathering and regulation

Illuminating Parts

9

Has two reflecting surfaces: plane and concave

Mirror

10

Found below the stage connected to the condenser and is used to regulate the amount of light by means of a lever

Iris Diaphragm

11

Found below the stage and is used to concentrate light to the specimen under study

Condenser

12

Consists of precise parts of metals to support and adjust the optical parts

Mechanical parts

13

A heavy U-, V-, or Y-shaped foot that makes the microscope stand stable on any flat surface

Base

14

A short piece of metal supporting the rest of the microscope

Pillar

15

A curved metal for holding microscope

Arm or Handle

16

A joint between the arm and the pillar that allows possible tilting of the upper part of the microscope

Inclination Joint

17

A tubular part attached to the body and bears the upper arm

Body Tube

18

Facilitates the changing of objectives in focus

Revolving or Rotating Nosepiece

19

A concave disc which protects the objectives from dust

Dust Shield

20

A platform with central aperture for the passage of reflected light from the mirror and where the slides to be observed are placed

Stage

21

Replaces the clips and is used in manipulation of the slide

Mechanical Stage

22

Controls and facilitates the movement of the slide forward, backward, or from left to right

Coaxial Stage

23

Regulates the intensity of light given by the microscope

Light Intensity Control Knob

24

Used to raise or lower the stage to get the right image of the specimen

Focusing Mechanism

25

Larger focusing knob for big adjustments

Coarse Focus Knob

26

Smaller focusing knob for fine adjustments

Fine Focus Knob