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SEM

SEM

PRESENTATION OUTLINE

SCANNING ELECTRON MICROSCOPE

$65,000 - $175,000

Photo by Gamma Man

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

Guitar string

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