Microscopes

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  • Created by: Farhin
  • Created on: 24-10-13 18:06
What Is The Symbol For Nanometre?
nm
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What Is The Symbol For Micrometre?
µm
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How Does A Light Microscope Work?
Light Beam Is Focused Through Objective Lens, Then Through Eyepiece
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Advantages Of A Light Microscope
Easy to Observe Living Cells, Cheaper, Colour Images, Easy To Prepare Specimens
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Disadvantages Of Light Microscopes
No Detail, Low Resolution/Magnification,
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What Does SEM Stand for?
Scanning Electron Microscope
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What Does TEM Stand For?
Transmission Electron Microscope
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How Does A SEM Work?
Beam Of Electrons Are Focused On And Bounce Off Specimen, Dense Parts Absorb More
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Advantages Of A SEM
3D Images, Higher Resolution
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Disadvantages Of A SEM
Materials Need Special Coating, Lower Resolution
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What Does TEM Stand For?
Transmission Electron Microscope
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How Does A TEM Work?
Beam Of Electrons Are Focused And Go Through Specimen
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Advantages Of A TEM
Detailed Structures, Higher magnification
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Disadvantages Of A TEM
Only Use Thin Specimens, Lower Magnification
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Max. Resolution/Magnification For Light
0.2 µm, x1500
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Max. Resolution/Magnification For TEM
0.0001 µm, x1 000 000+
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Max. Resolution/Magnification For SEM
0.005 µm, Less x1 000 000
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What Is A Graticule?
Ruler for a microscope
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Other cards in this set

Card 2

Front

What Is The Symbol For Micrometre?

Back

µm

Card 3

Front

How Does A Light Microscope Work?

Back

Preview of the front of card 3

Card 4

Front

Advantages Of A Light Microscope

Back

Preview of the front of card 4

Card 5

Front

Disadvantages Of Light Microscopes

Back

Preview of the front of card 5
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