Mod 1 Lesson 5

Question 1

coarse focus

Answer 1

always the larger of the two focus knobs on a microscope; moves the stage up and down; also called the coarse adjustment knob

Question 2

condenser adjustment knob

Answer 2

controls the distance between the light condenser and the stage; do not adjust this knob unless directed

Question 3

diaphragm

Answer 3

the part of the microscope located right under the stage where the light passes through; it opens and closes the iris to let more or less light through the slide (changes the brightness)

Question 4

eyepiece

Answer 4

the part of the microscope allowing the user to look through it

Question 5

field of view

Answer 5

the diameter of the total circular area a user sees when looking through the microscope

Question 6

fine focus

Answer 6

always the smaller of the two focus knobs; changes the fine focus after the coarse adjustment has been initially set; also called the fine adjustment knob

Question 7

magnification

Answer 7

the factor by which an image appears to be enlarged

Question 8

mechanical stage controls

Answer 8

controls which allow the microscope user to move the slide while viewing when the slide is clipped in with the stage clips

Question 9

ocular lens

Answer 9

found on the eyepiece of the microscope; one of the two lenses involved in magnifying; typically 10x

Question 10

objective lens

Answer 10

a lens found on the revolving nosepiece of the microscope that can be rotated over the slide; if it is not snapped into place, the image will not be seen clearly

Question 11

revolving nosepiece

Answer 11

the part of the microscope that holds three or more objective lenses and can be rotated to easily change power or total magnification

Question 12

stage

Answer 12

the platform that the slide is placed on in a microscope

Question 13

total magnification

Answer 13

eyepiece magnifying factor multiplied by the objective magnifying factor