microscope

Question 1

an instrument used to see objects that are too small for the naked eye

Answer 1

microscope

Question 2

an instrument that produces an accurately enlarged image of small objects

Answer 2

microscope

Question 3

who developed the first microscope

Answer 3

hans and zacharias janssen (1590)

Question 4

developed a compound microscope with convex and concave lens

Answer 4

Galileo Galilei (1609)

Question 5

a book called micrographia officially documented a wide range of observations through the microscope

Answer 5

Robert Hooke (1665)

Question 6

what is the book that officially documented a wide range of observations through the microscope

Answer 6

Micrographia

Question 7

the first person to see microorganisms

Answer 7

Antan Van Leeuwenhoek (1674)

Question 8

starts to build the first electron microscope

Answer 8

Ernst Ruska (1931)

Question 9

reduces special abberration or the chromatic effect by showing the several weak lenses used together at certain distances gave good magnifications whithout blurring the image

Answer 9

Joseph Jackson Lister (1826)

Question 10

Parts of the compound light microscope

Answer 10

mechanical parts
illuminating parts
optical parts

Question 11

what are the mechanical parts

Answer 11

base
pillar
arm
inclination joint
body tube
draw tube
revolving nose piece
dust shield
coarse adjustmenet knob
fine adjustment knob
stage
mechanical stage
condenser adjustment knob
irish diaphragm

Question 12

microscope stand

Answer 12

base

Question 13

short supporting piece arising from the base

Answer 13

pillar

Question 14

short curved handle used in carrying the microscope

Answer 14

arm

Question 15

joint between the pillar and the arm used to tilt the upper arm

Answer 15

inclination joint

Question 16

attached to the arm; bears the lenses

Answer 16

body tube

Question 17

upper portion of the body tube which bears the eyepiece

Answer 17

draw tube

Question 18

revolving structure at the lower end of the body tube which bears the lower lenses or abjectives

Answer 18

revolving nose piece

Question 19

metallic structure above the nosepiece, which protects the lower lenses or objectives

Answer 19

dust shield

Question 20

screw used to bring the specimen into focus

Answer 20

coarse adjustment knob

Question 21

screw used for more delicate focusing

Answer 21

fine adjustment knob

Question 22

platform with a central aperture and two clips to hold the slide studied

Answer 22

stage

Question 23

mechanism attached to the stage for ease in moving the slide

Answer 23

mechanical stage

Question 24

elevates and lower the condenser to regulate the intensity of light

Answer 24

condenser adjustment knob

Question 25

lever in front of the condenser and which is moved horizontally to open/close diaphragm

Answer 25

iris diaphragm

Question 26

located beneath the stage and has concave and plane surfaces to gather and direct light in order to illuminate the object

Answer 26

mirror

Question 27

main function is to further magnify the image produced by the objective lenses

Answer 27

eyepiece or ocular lens

Question 28

ranges of ocular lens

Answer 28

6x, 10x, 15x

Question 29

objectives of eyepiece

Answer 29

scanner low power objective highpower objective oil immersion objective

Question 30

the lowest magnification powerof all objective lenses, usually 4x

Answer 30

scanner

Question 31

gives the highest magnification usually 97xz or 100x

Answer 31

oil immersion objective