SB1a Microscopes

Question 1

Describe light microscopes (4points)

Answer 1

.low magnification
.low resolving power
.simple to use
.uses light rays to illuminate specimens

Question 2

Describe electron microscopes (4points)

Answer 2

.high magnification
.high resolving power
.users requier technical skills
.uses a beam of electrons to view specimens

Question 3

Resolving power?

Answer 3

the resolution of an image (how detailed an image is).

Question 4

Magnification?

Answer 4

how much bigger the image is than the specimen being viewed.

Question 5

Resolution?

Answer 5

how well a microscope distinguishes between two points close image. If the lens cannot separate two points, increasing the magnification will make the image blurry.

Question 6

Magnification = ?

Answer 6

image size/actual size

Question 7

Total magnification = ?

Answer 7

eyepiece magnification x objection magnification

Question 8

quantative units?

Answer 8

kilo 10³

milli 10-​³

micro 10-⁶

nano 10-⁹

pico 10-¹²