Electron Microscope

Question 1

What do electron microscopes use?

Answer 1

A beam of electrons, rather than electromagnetic radiation to ‘illuminate’ the specimen.

Question 2

What do electrons behave like?

Answer 2

Waves.
They can easily be produced - using hot wire.
Focused - using electromagnetic.
And detected - using photographic film.

Question 3

A beam of electron has an effective wavelength of what?

Answer 3

Less then 1nm, so it can be used to resolve small sub-cellular ultra structure.

Question 4

Name the 2 electron microscopes?

Answer 4

Transmission electron microscopes.

Scanning electron microscopes.