• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

What Are the Advantages and Disadvantages of A Light And Electron Microscope?

Extracts from this document...


WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF A LIGHT AND ELECTRON MICROSCOPE? The naked eyes are not powerful enough to see any type of ultra structure, such as a living or dead cell and its components. So, to further scientific stuffy the microscope invented; the light microscope. The light microscope, relatively small and light weight to the electron microscope, is the earlier discover of both types of microscopes, which I am going to discuss today. As with everything it has its advantages as well as its disadvantages. This certain microscope can magnify any sample up to 2000 times its original size. This is useful for scientists because if the species were alive you can monitor movement of the cell. The magnification allows the cell structures to be observed too. The magnification means that it gets bigger, so when you focus the knob it becomes larger. Furthermore, the light microscope produce an image which are I colour. When I stained a specimen on my slide for microscopy, I saw the colours which were very vivid. ...read more.


The background of light is that, light can not pass through anything half its wavelength. For instance, white light is 0.55µm and anything smaller than 0.275µm is way too small for light to sufficiently pas through. Therefore this means to achieve resolution for a finer and more detailed image something else should pass through the gaps; something smaller than photons. This is where the electron microscope comes to play. This recent finding uses electrons, as they are miniscule, to give a higher resolution and with that comes greater detail. The electron microscope is relatively larger and uses a vacuum and electrons to produce a high quality image, by sending electrons through the tiny gaps. (An anode is there to speed it up). This gives an advantage to the electron microscope, a better resolution. As a result if any person wants to see something such as the mitochondrion, the Golgi Body or even a lysosome they are able to. ...read more.


Clearly if you had air, the electrons will knocked by the air particles and it has to be in that magnetic field. This is the reason why it has to be dead. To conclude, light and electron microscope are both equally as useful as well as being limited in their own way, it recommend that in order to get the more satisfying ultra structure image to use the electron microscope and the light one for something less accurate and more general. To finish I am going to draw up a table, of advantages and disadvantages of each microscope- for an easy reading. LIGHT MICROSCOPE ADVANTAGE DISADVANTAGE Small No more detail once reached a certain point Light weight Magnification up to 2000x Sample can alive or dead Colour ELECTRON MICROSCOPE ADVANTAGE DISADVANTAGE Great resolution and magnification for details like the ultra structure Heavy 200,000x magnification Big You can see a whole exterior of a specimen- its body Mono colours. Black and white You can see the inside Requires skill, expertise and training or experience. Sample has to be dead Very complicated. Movemtn can not be registered By Aswani Pillai 6L3 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Microscopes & Lenses section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Here's what a star student thought of this essay

3 star(s)

Response to the question

The comparison of advantages and disadvantages is done very well but the level of detail is lacking. The student simply tends to state the advantages and disadvantages and for A level, I believe they should have explored deeper into the ...

Read full review

Response to the question

The comparison of advantages and disadvantages is done very well but the level of detail is lacking. The student simply tends to state the advantages and disadvantages and for A level, I believe they should have explored deeper into the reasons behind it. Why is the microscope limited in the way that it is? How does it work on a fundamental level? I think such questions are key to answering the question fully and appropriately for this level. Their response is very clearly written but not necessarily clearly presented. I feel light blue is not the best colour to use for a piece of work like this.

Level of analysis

The student's analysis is poor for A level. They do not explore deeply enough into the reasons behind how the microscopes work by explaining it using fundamental physics that they have learned from the syllabus. Their judgements, however, were suitable and the relevant evidence was used to support it even if it was not supported by detailed evidence. To improve, they need to go back and explain why - re-reading over their work they will find that there were many areas where the question of "why?" or "and?" arose. Such questions should not occur if a piece of work answers the question fully.

Quality of writing

There was a typo in the work. This shows the lack of proof reading at the basic level as the word processor should pick this up automatically. The appropriate technical terms were used but the student needs to show a proper understanding of such terms by either defining them in a glossary or explaining them in the body of the work. The student follows the typical layout of the work, although they do not follow the typical presentation of the work. The colours are not best suited to a piece of coursework like this.

Did you find this review helpful? Join our team of reviewers and help other students learn

Reviewed by crystalclearmagic 27/03/2012

Read less
Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Microscopes & Lenses essays

  1. Peer reviewed

    The advantages and limitations of electron microscopy.

    4 star(s)

    The electromagnets work in the same way as lenses for light, by altering the path of the beam. Electron microscopes were first being used in the 1930's and 1940's, but it wasn't until after WW2 that they were sophisticated enough for viewing cells.

  2. Peer reviewed

    The Principles and Limitations of Electron Microscopy.

    3 star(s)

    The TEM, as the name implies, actually relies on the transmission of the beam through the specimen: the direct physical interposition of the specimen into the beam is necessary to produce the image. The SEM, on the other hand, can examine specimens much too thick for the beam to pass through and its image is produced electronically.

  1. Peer reviewed

    The history, development and use of the light and electron microscope

    3 star(s)

    Electron microscope also helps us to see deep into the specimen and view the organells. Scientists have taken advantage over this by breaking up cells to get organells and find their functions and properties. Explanation of the terms magnification and resolution.

  2. Peer reviewed

    Comparing the Light and Electron Microscope

    3 star(s)

    This limits the amount of structural detail that can be seen within a cell. Higher magnification with good resolution can be obtained by using a special objective lens. This lens is called an Oil Immersion lens; this is a lens with fluid (oil)

  1. In this experiment I will be investigating the efficiency of a motor. I hope ...

    / 3.18 = 0.056666213 x 100 = 5.66 0.3 1.29 4.56 1.0.59 2.0.64 3.0.60 Average: 0.61 1.29 x 4.56 x 0.61 = 3.588264 = 3.59 0.3 x 0.9 = 0.27 0.27 / 3.59 = 0.075245299 x 100 = 7.52 0.4 1.29 4.56 1.0.66 2.0.70 3.0.67 Average: 0.68 1.29 x 4.56

  2. Telescopes - research into types and properties of telescopes

    This is a best all-round, all-purpose telescope design. It combines the optical advantages of both lenses and mirrors while cancelling their disadvantages. However it is more expensive than Newtonian telescopes. Its also loses some light due to the secondary mirror obstruction compared with refractors.

  1. My experiments focus is to obtain an accurate measurement for a specific lenss power.

    These components were placed on one end of the desk with the middle of the filament lamp aligned with "0" millimetres on the ruler. 3. Then I put the lens in the holder and placed it on top of a wooden block.

  2. Aim To determine the refractive index of a material and the speed of light ...

    in that prism was also calculated to be 1.93 x 108 ms-1. This is slower than the speed of light in a vacuum of , but that is due to the dense of the material, where the clown glass prism had a higher refractive index (1.55)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work