lab 2 (the compound microscope)

Question 1

calculation of magnification

Answer 1

total magnification= objective magnification x ocular magnification

Question 2

empty magnification

Answer 2

where the image becomes magnified without an increase in detail resolution

Question 3

immersion oil

Answer 3

has a refractive index as glass, is able to capture more lights to enter into an objective for a better resolution. only used 100x objective.

Question 4

working distance

Answer 4

distance separating specimen and the objective lens. when magnification increases, then working distance decreases.

Question 5

microscopic field of view

Answer 5

the area on the slide one can observe. as you increase the magnification, the field of view will decrease.

Question 6

parfocal

Answer 6

the ability of a microscope to need only minor focusing adjustment after a specimen is found.

Question 7

diaphragm

Answer 7

adjustable opening the stage. allow different amount of light onto the specimen

Question 8

condenser

Answer 8

collects and concentrates lights onto the specimen

Question 9

coarse focus adjustment

Answer 9

a knob that makes large adjustments to the focus by moving the stage up or down rapidly.

Question 10

light source

Answer 10

directs light upward onto the slide

Question 11

revolving nosepiece

Answer 11

the rotating device that holds the lenses

Question 12

rheostat

Answer 12

controls the intensity of the light source.