PRESENTATION OUTLINE
SCANNING ELECTRON MICROSCOPE
The SEM was invented by Manfred Von Ardenne in 1937
HOW DO YOU SEE THE IMAGE?
What type of lens does it have?
An electromagnetic lens
How does it focus?
It produces images of the sample by scanning it with a focus beam of electrons
Larva of a bluebottle fly
The eye of a needle threaded with red cotton
FUN FACTS
- It's important tool in modern forensic science
- Puts images in black and white
Cameron Ella Erin Kendell