Parts of a Microscope

For Diversity I Lab Quiz 2

1

head

2

arm

3

aperture

4

stage controls

5

coarse adjustment

6

fine adjustment

7

brightness adjustment

8

base

9

light switch

10

illumination

11

condenser

12

mechanical stage

13

stage clip

14

objective lenses

15

nose piece

16

diopter adjustment

17

ocular lenses

connects the eyepiece lens to the objective lens

head

supports the microscope’s head and is also used when carrying it

arm

lowermost part of the microscope that supports the entire microscope structure; illuminators, light switches, and electrical wiring systems are fitted in here

base

magnification in the ocular lens

10x

magnification using 4x objective

40x

magnification using 10x objective

100x

magnification using 40x objective

400x

control knob present only in the binocular microscope that is used to adjust the focus of one eyepiece

diopter adjustment

movable circular structure that houses all the objective lenses, also called revolving turret

nose piece

objective lenses with 100X or greater magnification are only use for ___

oil immersion

smaller knob used to move the stage up or down very slowly

fine adjustment

larger knob used to move the stage up or down very rapidly

coarse adjustment

used to move the stage mechanically left/right and forward/backward

stage adjustment

hole in the microscope stage through which the transmitted light from the source reaches the stage

aperture

lenses that are used to collect and focus light from the illuminator into the specimen, ensuring a clearer image

condenser

controls the amount of light reaching the specimen

diaphragm

controls how far the stages can move, preventing the objective lens from getting too close to the specimen slide, which could damage the specimen

rack stop

prevent stray light, provide comfort during long viewing sessions, and keep the hard surfaces of glasses and oculars from hitting one another

rubber eye cups

stereo microscopes have both bottom and top illumination controlled by the ____ to the top right of the base

pressure button