Microscopy
- Created by: saralycett
- Created on: 23-05-17 17:23
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- Microscopy
- Transmission Electron Microscope
- Electrons pass through the material
- Magnifactionx500,000
- Resolution0.2nm
- Scanning Electron Microscope (SEM)
- Magnifactionx100,000
- Electons are 'bounced' of the surface to give a 3D imiage
- Resolution20nm
- Light Microscope
- Easier to see larger cellular structures (nuclei, chloroplasts, vacuoles and occasionly mitochondrian
- Magnification: x1500
- Resolution: 200nm
- Magnification: measure of ability of a lens to magnify the size of an optical image
- Resolution: ability of a microscope to distinguish two adjacent points as seperate entities
- Magnification of viewed image
- Magnification of eyepiece x magnification of lens
- Magnification equation
- Length in picture/Real length
- Use of stains
- Light microscopy: dyes absorb some colours but reflect others
- TEM: Used to stain electrons
- Transmission Electron Microscope
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