Page 613 - Ultimate Visual Dictionary (DK)

HIGH-PERFORMANCE MICROSCOPES
HOW A TEM WORKS HITACHI S-3500H Evacuated column
SCANNING ELECTRON
Electron MICROSCOPE Screen
Electron gun
stream Image
controls
Aperture Aperture
plate creates
electron
beam

Condenser
focuses Vacuum
electron pump
Specimen beam cabinet
stage
Specimen

Keyboard
Objective lens HOW A SEM WORKS
refocuses
image formed
by electron Electron Electron gun
beam stream
Aperture creates
Aperture electron beam
Specimen Projector lens plate
airlock
enlarges and Condenser lens focuses
projects the Scanning coils primary electron beam
image direct electron
beam across the Screen
Phosphor specimen
imaging
screen glows Binocular
when hit by eyepieces
electrons to
create the
image

Objective lens
Cooling refocuses
device
electron beam
Electron
detector
assembly
Specimen
Screen stage Secondary
Camera
electrons from the
specimen surface
Specimen surface hit
by primary electrons
Underside of
caterpillar
body

Caterpillar
foot
Keyboard
Image controls
Mouse
SEM IMAGE OF A CATERPILLAR
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