What are the advantages of an electron microscope?
Magnification and higher resolution – as electrons rather than light waves are used, it can be used to analyze structures which cannot otherwise be seen. The resolution of electron microscopy images is in the range of up to 0.2 nm, which is 1000x more detailed than light microscopy.
How do the characteristics of electron microscopes make them useful for cells?
What characteristics do light microscopes and electron microscopes share?
What are the advantages and disadvantages of electron microscope?
|Advantages High resolution High magnification 30 images with SEM||Disadvantages Expensive Large and not portable Only dead specimen can be used Lots of training required to use them|
|Evaluation Unsuitable for use in a classroom/casual use, more purposeful for research purposes.|
What is the principle of electron microscope?
The lenses used in the electron microscope are magnetic coils. These magnetic coils are capable of focusing the electron beam on the sample such that the sample gets illuminated. As the flow of current increases, the strength of the magnetic lens increases.
What are the 3 main differences between light and electron microscopes?
|Light Microscope||Electron Microscope|
|Condenser, Objective and eye piece lenses are made up of glasses.||All lenses are electromagnetic.|
|It has low resolving power (0.25µm to 0.3µm).||It has high resolving power (0.001µm), about 250 times higher than light microscope.|
What are the 3 types of electron microscopes?
What is the difference between electron microscope and optical microscope?
What is a major disadvantage of electron microscopes?
The main disadvantages are cost, size, maintenance, researcher training and image artifacts resulting from specimen preparation. This type of microscope is a large, cumbersome, expensive piece of equipment, extremely sensitive to vibration and external magnetic fields.