ex 2: CARE & USE OF MICROSCOPE

Question 1

brightfield light microscopy

Answer 1

binocular compound microscopes, meaning they have 2 eyepieces and more than one lens

Question 2

ocular lenses

Answer 2

(eye pieces) that magnify the specimen 10x

Question 3

objective lenses

Answer 3

magnify 4X, 10X, 40X, 100X

Question 4

condenser lens

Answer 4

does not magnify but instead focuses the light

Question 5

objective lens are located on

Answer 5

rotating nosepiece

Question 6

rotating nosepiece

Answer 6

allows user to switch each easily from one magnifying lens to another

Question 7

4X objective is known as

Answer 7

the scanning lens

Question 8

10X objective is known as

Answer 8

the low power lens

Question 9

40X objective is known as

Answer 9

high-dry lens

Question 10

100X objective is known as

Answer 10

oil immersion lens

Question 11

path of light is from the

Answer 11

illuminator (light source)

up through the condenser lens

throught the specimen on the slide

up through the objective lens

to the ocular lens

finally to the person viewing the microscope

Question 12

light intensity knob (dimmer)

Answer 12

control the amount of light from the illuminator

Question 13

iris diaphragm

Answer 13

can be opened and closed to control the amount of light that passes from the illuminator through the condenser lens

Question 14

stage

Answer 14

the flat surface upon which a slide is placed

Question 15

course focus knob

Answer 15

moves the stage vertically, toward, and away from the objective lens

should only be used for lower power objectives (4X and 10X)

Question 16

fine focus knobs

Answer 16

move the stage up and down from the objective lens

Question 17

parfocal

Answer 17

when a specimen in focus at one magnification it will