• 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...

Introduction

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.

...read more.

Middle

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. It magnifies up to 200,000 times, which is a huge amount!

There are two types of electron microscope, the Scanning Electron Microscope [SEM] and the Transmission Electron Microscope [TEM]. Scanning Electron Microscope shows the external and whole image of a specimen such as a dust mite, or a nit. The Transmission Electron Microscope is literally the opposite. It gives the image from the interior. These are very exciting options as they give an overview of the entire specimen in question and we are able to study them in great detail and depth.

...read more.

Conclusion

ss="c3" colspan="1" rowspan="1">

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.

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)

    Microscopes of a variety of different kinds can be used to produce a magnified image of cells. There are many microscopes but Electron Microscope has given us a greater understanding of cellular structure. Electron Microscope allows the user to determine the internal structure of materials (specimen), either of biological or non-biological origin.

  2. 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

  1. Telescopes - research into types and properties of telescopes

    This secondary mirror produces diffraction effects, making bright objects appear to have spikes. Isaac Newton designed one of the first reflectors in 1668 to avoid chromatic aberration caused by lenses. In his design, Newton used a small, flat mirror to reflect light from the primary mirror to an eyepiece at the side of the telescope tube.

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

    This was aligned to the desired 'U' starting point. (i.e. 500mm away from filament lamp) 4. At this stage the equipment was set up for the first results. I moved the screen up and down the ruler (on the opposite side of the lens to the filament lamp)

  1. Does the focal length of a lens depend on the colour of light used?

    I will also keep everything as constant as possible by; using the same ray box, using the same voltage to the ray box, using the same screen, keeping the screen tilted perfectly in line with the other apparatus all the time, and obtaining all of my results in the same level of light.

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

    than the refractive index of a vacuum (1.00). Also, another experiment was conducted to determine at which angle the light ray shines directly glass prism would produce a critical angle of the total internal reflection. It was found to be approximately 42, but from calculation, it was found that by

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