Magnification

Question 1

Magnification equation

Answer 1

Magnification = Image size / Actual size

/ I \
———
M | A

Question 2

Why does electron microscopes have higher resolution and magnification than light

Answer 2

The wavelength of electrons is short / smaller so their wavelength and magnification is higher OR light has a longer wavelength than electrons

Question 3

Resolution

Answer 3

The ability to distinguish two adjacent objects as separate points

Question 4

How does a Transmission Electron microscope work

Answer 4

It works by shooting a beam of electrons at a thin sample and detecting those electrons make it though to the other side

Question 5

Transmission Electron microscope properties

Answer 5

High magnification and resolution
See internal structure in detail
No colour
2D
Expensive
Only dead cells in a vacuum

Question 6

How does scanning electron microscope works

Answer 6

Uses BEAMS of electrons to reflect of the structures to develop a 3D Image

Question 7

Scanning electron microscope properties

Answer 7

High magnification and resolution
3D image
Detailed texture
Expensive
No internal features
No need for thin section