Lab 1

Question 1

Microscope

Answer 1

instrument and tool used in the study of cells, tissues, and small organisms

Question 2

Compound Microscope

Answer 2

most commonly used microscope that’s composed of a lens system, light source, and adjusting mechanisms

Question 3

Stereo Microscope

Answer 3

microscope used to look at larger or opaque objects

Question 4

Base

Answer 4

rests on table and contains a built-in light source and light switch

Question 5

Light Source

Answer 5

part of microscope where light comes from

Question 6

Arm

Answer 6

rises from base and supports stage, lens system, and control mechanisms

Question 7

Stage

Answer 7

flat surface where microscope is placed

Question 8

Stage Clips/Mechanical Stage & Control

Answer 8

Stage clips/mechanical stage holds slide in place and stage control allows movement of slide

Question 9

Condenser

Answer 9

located below stage and concentrates light on object being observed

Question 10

Iris Diaphragm

Answer 10

built within the condenser and enables you to control the amount of light entering the lens system

Question 11

Ocular lens

Answer 11

eyepiece

Question 12

Nosepiece

Answer 12

part that has attached objective lenses

Question 13

Scanning Objective Lens

Answer 13

4x magnification

Question 14

Low Power Objective Lens

Answer 14

10x magnification

Question 15

High Dry Objective Lens

Answer 15

40x magnification

Question 16

Oil-immersion Objective Lens

Answer 16

100x magnification

Question 17

Course Focus Knob

Answer 17

brings objects into rough focus when using the 4x and 10x objectives.

Question 18

Fine Focus Knob

Answer 18

used to bring objects into sharp focus; used with 40x and 100x objectives

Question 19

Magnification

Answer 19

ratio of image size to actual size

Question 20

Total Magnification

Answer 20

calculated by multiplying ocular (10x) by the objective lens.

Question 21

Resolving Power/Resolution/Resolve

Answer 21

ability of a lens or microscope to distinguish between two closely adjacent points or two separate objects

Question 22

Contrast

Answer 22

difference in luminance and/or color that makes an object distinguishable; improved by reduction in light;

Question 23

Parfocal

Answer 23

meaning if an object is centered and in sharp focus with one objective, it will be the same with another objective

Question 24

Wet Mount Slide

Answer 24

slide with specimen mounted in a liquid (water) and covered with a glass

Question 25

Field of View/Field

Answer 25

circle of light that can be seen; amount of object you can see will decrease with increasing magnification

Question 26

Depth of Field

Answer 26

Vertical distance within which structures are in sharp focus; decreases as magnification increases

Question 27

Diameter of Field

Answer 27

helps in estimating the size of the objective

Question 28

Working Distance

Answer 28

Distance from the end of the objective to the specimen; decreases with increasing magnification