Microscopes

Question 1

Tools used to enlarge images of small objects so as they can be studied.

Answer 1

Microscopes

Question 2

Historians credit the invention of the microscope to which Dutch spectacle makers? Around what year?

Answer 2

Hans and Zacharias Janssen; 1590

Question 3

Most of the documented works of the time of the creation of the first compound microscope are credited to the likes of whom?

Answer 3

Antoine van Leeuwenhoek
and Robert Hooke

Question 4

Instrument containing two lenses, which
magnifies, and a variety of knobs to resolve
(focus) the picture

Answer 4

Compound Light Microscope

Question 5

ability to make smaller objects look
larger in contrast to their original sizes

Answer 5

Magnification

Question 6

capability of a system to distinguish
details in a sample being viewed

Answer 6

Resolution

Question 7

depends on the distance between two distinguishable points in a field of vision

Answer 7

Resolution

Question 8

how we detect an object against a
background

Answer 8

Contrast

Question 9

relative difference in the light intensity
between the image and the background it has

Answer 9

Contrast

Question 10

Light microscopes discussed in the LG

Answer 10

Brightfield Microscope
Dark field Microscope
Phase contrast
Differential interference contrast
Fluorescence
Confocal
Two-photon

Question 11

Creates an image by means of
directing light from a light source to
the sample or specimen being
observed

Answer 11

Brightfield Microscope

Question 12

most commonly
used type of microscope

Answer 12

Brightfield Microscope

Question 13

uses
two or more lenses that produces a
dark image in a light background

Answer 13

Brightfield Microscope

Question 14

works like a brightfield microscope but has a modification in the part called the condenser

Answer 14

Dark field Microscope

Question 15

A darkfield microscope works like a
brightfield microscope but has a modification in the part called the

Answer 15

condenser

Question 16

shows a bright specimen on a dark background

Answer 16

Dark field Microscope

Question 17

Types of electron microscopes

Answer 17

transmission electron microscope and the
scanning electron microscope

Question 18

Used in studying inner morphology
of samples

Answer 18

Transmission Electron Microscopes

Question 19

requires ultra thin slices of samples and then stained with metals like gold or palladium

Answer 19

Transmission Electron Microscopes

Question 20

Used to study surfaces of samples

Answer 20

Scanning Electron Microscopes

Question 21

shows the overall surface of our
specimen

Answer 21

Scanning Electron Microscopes

Question 22

This is the platform on which the microscope slide rests and the clamp that secures the slide

Answer 22

Mechanical stage

Question 23

control the stage front to back and the slide from side to side

Answer 23

Mechanical stage control knobs (x-y control knobs)

Question 24

This adjusts the intensity of light
reaching the specimen under focus

Answer 24

Iris diaphragm

Question 25

Enumerate the three lens systems utilized in microscopes

Answer 25

Eyepiece (ocular)
Objectives
Condenser

Question 26

Lens system with magnification of 10X

Answer 26

Eyepiece (ocular)

Question 27

Enumerate the four objectives and their magnification

Answer 27

1. Scanner - 4x
2. Low power - 10x
3. High power - 40x
   4 .Oil immersion - 100X

Question 28

gathers and conducts the light to the specimen

Answer 28

Condenser

Question 29

located on both sides of the microscope

Answer 29

Focusing knobs

Question 30

adjustment knob that moves the stage up and down

Answer 30

coarse adjustment knob

Question 31

adjustment knob when focusing on a specimen under the 40X or 100X objective

Answer 31

fine adjustment knob

Question 32

Holds the objective lenses

Answer 32

Nosepiece