Lab 2: Microscope

Question 1

_________ microscope: specimen seen as dark figure on light field

Answer 1

light

Question 2

______ microscope; two lens system to magnify the image

Answer 2

compound

Question 3

compound microscope with a lens called ________ ________

Answer 3

ocular lens

Question 4

total magnification = ?

Answer 4

ocular lens magnification x lens magnification

Question 5

_________: keeps image in focus even when changing from one objective to the other

Answer 5

parfocal

Question 6

__________: the distance between the specimen and the objective lens when focused

Answer 6

working distance

Question 7

As working distance increases magnification ___________

Answer 7

decreases

Question 8

_______ _________: a mathematical constant that describes the relative efficiency of a lens in bringing rays of light

Answer 8

Numerical Aperture

Question 9

What is the NA reading range

Answer 9

0.1-1.25

Question 10

increase in the NA value. _______ resolution

Answer 10

increase

Question 11

decrease in wavelength. _________ in resolution

Answer 11

increase

Question 12

______= wavelength/2xNA

Answer 12

resolving power

Question 13

____________: distance between the pupils of the eyes

Answer 13

inter-pupillary distance

Question 14

____________: the individual adjustment to each eye

Answer 14

ocular focus adjustment