microscope

Question 1

who invented the microscope?

Answer 1

zacharias janssen & anton van leeuwenhoek

Question 2

what are the 11 parts of a microscope?

Answer 2

ocular lens
revolving nosepiece
objectives
arm
stage clips
stage
diaphragm
coarse adjustment knob
fine adjustment knob
illuminator
base

Question 3

ocular lens

Answer 3

where we look through, magnifies specimen

Question 4

base

Answer 4

supports the microscope

Question 5

revolving nosepiece

Answer 5

holds the objective lenses

Question 6

arm

Answer 6

used to carry the microscope, supports upper part of microscope

Question 7

stage

Answer 7

where the slides is placed

Question 8

stage clips

Answer 8

hold the slide in place

Question 9

diaphragm

Answer 9

controls the amount of light that reaches the objective lens

Question 10

coarse focus knob

Answer 10

used when using low power objective

Question 11

fine adjustment knob

Answer 11

used for medium and high power objectives

Question 12

illuminator

Answer 12

provides light

Question 13

total magnification/magnification?

Answer 13

• how many times larger an object appears to the eye
• (ocular lens)(objective lens)
• unit is “x”

Question 14

field of view

Answer 14

• diameter of circle you see when you look down a microscope
• low FV: w/ ruler
• medium FV = low FV(lowM/medM)
• high FV = low FV(lowM/highM)
• units are mm

Question 15

specimen size

Answer 15

• actual size of specimen, use the greatest length
• SS=FV/approx. amnt. of specimens tht fit acoss FV

Question 16

diagram magnification

Answer 16

• how many times larger the diagram is than the specimen
• DM=size of drawing/specimen size