Please enable JavaScript.
Coggle requires JavaScript to display documents.
Biology Microscopy - Coggle Diagram
Biology Microscopy
Electron Microscope
Uses beams of electrons to illuminate the specimen
Has a shorter wavelength than light so you get a better resolution
No colour visible
Transmission EM
Cross section through the middle of what you are viewing
0.5 nm
Scanning EM
Bounces off the surface
3-10nm resolving power
Staining
Organelles become more visible
Cell structures are often transparent
Increases the contrast between different organelles
Laser Scanning Confocal Microscope
Laser light with high intensity
to illuminate specimen which
are treated with chemical dye
High resolution
2D
Magnification
Is how many times bigger an image is
than an object
Light Microscope : x1500
Electron Microscope: x2000000
Resolution
The ability to distinguish between two points on an image