Topic 2B - Electron Microscopy Flashcards
1
Q
The maximum resolution of a typical electron microscope is…
A
1 nm (200x better than a light microscope)
2
Q
How does electron microscopy improve resolution compared to light microscopy?
A
Altered wavelength: e- waves are shorter than light waves
3
Q
Instead of glass as seen in a light microscope, what feature of an electron microscope focusses charged particles?
A
Magnetic coils
4
Q
Why do electron microscopes function in a vacuum?
A
Because if electrons interacted with air molecules this would alter resolution
5
Q
What are the disadvantages of using an electron microscope?
A
Preparation of specimen is very complex
