Microscopy & Histotech

Question 1

“microscope” came from greek words __________ & __________

Answer 1

micron = small
scopos = aim

Question 2

Greek word “micron” means

Answer 2

small

Question 3

Greek word “scomos” means

Answer 3

aim

Question 4

It is an instrument for viewing objects that are too small to be seen by the naked or unaided eye

Answer 4

Microscope

Question 5

Define “microscope”

Answer 5

an instrument used for viewing objects that are too small to be seen by the naked eye

Question 6

It is the science of investigating small objects using microscope

Answer 6

Microscopy

Question 7

define “microscopy”

Answer 7

science that deals with investigating small objects with the use of microscope

Question 8

1590 (Historical Background of Microscope)

Answer 8

Hans Janssen and his son Zacharias Janssen developed the first compound microscope

Question 9

In what year did J&J developed the fist compound microscope

Answer 9

1590

Question 10

1609 (Historical Background of Microscope)

Answer 10

Galileo Galilei - also developed a compound microscope

Question 11

In what year did Galileo Galilei developed his own version of compound microscope

Answer 11

1609

Question 12

1620 (Historical Background of Microscope)

Answer 12

Christian Huygens, another Dutchman, developed a simple 2-lens ocular system that was chromatically corrected

Question 13

The theory that Christian Huygens introduced

Answer 13

Huygen wave theory - explains why and how light is refracted when it travels from one medium to another

Question 14

What is Huygen Wave Theory

Answer 14

A theory proposed by Christian Huygens which explains why and how light is refracted from one source to another.

Question 15

He made the first microscopic observation

Answer 15

Robert Hooke

Question 16

He is generally credited with binging the microscope to the attention of biologists

Answer 16

Anton van Leeuwenhoek

Question 17

He is a tradesman of Delft, Holland

Answer 17

Anton van Leeuwenhoek (1632-1723)

Question 18

1661 (Historical Background of Microscope)

Answer 18

Anton van Leeuwenhoek discovered bacteria, free-living and parasitic microscopic protists, sperm cells, blood cells, microscopic nematodes, etc.

Question 19

When did Anton van Leeuwenhoek discovered bacteria, free-living, and parasitic microscopic protists, sperm cells, blood cells, microscopic nematodes, etcs.?

Answer 19

1661

Question 20

He was the first to observe single-celled organisms known as microbes

Answer 20

Anton van Leeuwenhoek

Question 21

He is the most popular in various microscopies

Answer 21

Anton van Leeuwenhoek

Question 22

(Identification)
It is the degree of enlargement

Answer 22

Magnification

Question 23

(Identification)

No. of times the length, diameter of an object is multiplied.

Answer 23

Magnification

Question 24

Define MAGNIFICATION

Answer 24

Tells the number of times the specimen is enlarged; specifically the no. of times the length & diameter of an object is multiplied

Question 25

Refers to the ability of the lenses to distinguish fine details and structures

Answer 25

Resolution (Resolving Power)

Question 26

Define RESOLUTION

Answer 26

Also known as “resolving power.” It is the ability of the lenses to reveal closely the adjacent structural details as separate and distinct.