The biggest disadvantage of an electron microscope in the study of cells is that the cells must be fixed and prepared prior to viewing. Since many of the questions about cell function relate to the dynamic change of cells this is good reason to use other tools for this kind of research.
Advantages: You can see incredibly small particles with its intense magnifying power (up to about 20,000 times) Disadvantages: Using EM's, you cannot view objects/organisms in live color, or in a live state (shooting thousands of electrons at incredibly high speeds just doesn't agree with living systems)
Advantage of EM is that the resolusion power is very high so one can observe the structure of virus particle,varius cell organeles etc but main disadvantages are we can not observe live specimen,sample preparation is laborious and is very costly
The disadvantages of STM are listed as follows:
- It is slower compared to other techniques.
- It is mainly used to analyze conducting materials.
- It is more prone to mechanical vibrations and acoustic disturbances
- The best results from STM can be obtained only in vacuum conditions and hence it may not be the best tool to inspect ad analyse biological samples
They do not really allow you to see different tissues etc only the very small detials of the cells. There is no overview.
Samples are examined in a vacuum, so you can't examine either live subjects or vital processes. They also cost as much as a few hundred light scopes.
a6
Light microscopes allow you to view living specimens and electron microscopes do not allow this.
No one exactly knows the exact number of how many electron microscopes there are in the world but the estimation would depend on how strong these microscopes are (as i dont know much about electron microscopes).
Scientists use electron microscopes rather than electron microscopes due to the cause of electron microscopes are better at looking deeper into the object you want to see.
You mean "electron," of course. There are a number of "advantages," but this is really not the right way to look at it, so to speak. The most obvious one is color. Electron microscopes cannot detect color because they do not use light to illuminate the object, they use electrons. Depending upon what one is looking for, color contrasts can be very important. Electron microscopes have their own advantages, primarily much higher magnification.
The advantages of electron microscopes are : -Higher magnification
a6
advantages: you can clearly see the color of the object. you can use living samples it requires little or no preparation of the sample disadvantages: uses low magnification
Light microscopes allow you to view living specimens and electron microscopes do not allow this.
Light Microscopes And Electron Microscopes
Light Microscopes And Electron Microscopes
light microscopes and electron microscopes
Cell are not discovered using electron microscopes.
Electron microscopes and what ... Light microscopes produce magnified images by focusing visible light rays. Electron microscopes produce magnified images by focusing beams of electrons
No one exactly knows the exact number of how many electron microscopes there are in the world but the estimation would depend on how strong these microscopes are (as i dont know much about electron microscopes).
Two types of electron microscopes are the scanning electron microscope, or SEM, and transmission electron microscope, or TEM.
Scientists use electron microscopes rather than electron microscopes due to the cause of electron microscopes are better at looking deeper into the object you want to see.