Microscopy

867 Words2 Pages
bulb-icon

Recommended: compound microscope questions

Microscopy

Summary

The entire exercise was all about caring for and using the microscope. We performed various activities that enabled us to familiarize ourselves with the parts and uses of the microscope. Using the microscope, we observed different objects such as cotton, silk, hair, and even a letter "e." We viewed it using both the low power objective and the high power objective. We did these activities in order to better understand how the compound light microscope works and also to learn about the different procedures in setting up a slide. The results of the activity made us learn how to operate the microscope efficiently. I found out that the iris diaphragm controls the light and the uses of the LPO and HPO. I also noticed that the view of the object being illuminated is inverted.

Abbreviations

LPO- Low power objective

HPO- High power objective

Introduction

There are a lot of things not visible to the naked eye. What most of us don't realize is that there is a world full of wonders out there; A world full of diversity and "magic." A world called microscopy. It's amazing how one single device called the microscope can let us view things that are too small for the human eye. A microscope has the power to magnify object from 100x to as much as 1000x or higher. In fact, there are many microscopes, each with their own unique capability. Examples of these are the atomic force microscope, scanning probe microscope, and electron microscope. Microscopy is the technique in which a person is able to view images of structures that are too small for the naked eye. In light microscopy, light is reflected through a series of lenses that eventually illuminate the object being seen.

The objectives of the exerc...

... middle of paper ...

...th the different parts and uses of the microscope. I conclude that compound light microscopes give inverted images of the object because of the reflected light; and that the passage of this light is controlled by the iris diaphragm. I also conclude that each part of the microscope is significant for it to function properly and effectively.

Literature cited

http://www.life.umd.edu/CBMG/faculty/wolniak/wolniakmicro.html

http://en.wikipedia.org/wiki/Microscopy

http://nsm1.fullerton.edu/~skarl/EM/Microscopy/LightMicroscopy.html

http://science.howstuffworks.com/light-microscope.htm

Show More
Related

  • Holden Caulfield in The Catcher in the Rye

    304 Words  | 1 Pages

    One definition of a microscope is "an optical instrument that uses a lens or a combination of lenses to produce magnified images of objects." Holden Caufield can be symbolized by a microscope and its parts: the field of view, the focus, and the magnifier.

    Read More

  • Daguerreotype-Louis-Jacques-Mande Daguerre

    1379 Words  | 3 Pages

    Prior to the invention of the daguerreotype, the Camera Obscura was the main optical instrument that was used to project images onto paper. The Camera Obscura was a device in the shape of a box that allowed light, which was being reflected from the images that the user was intending to capture, to enter through an opening at one end of the box to form an image on a surface and an artist would then trace the image to form the most accurate impression of an image at that peri...

    Read More

  • Interocular Transfer of the Motion After-Effect

    1043 Words  | 3 Pages

    The history of recognition and research into the MAE phenomenon can be traced back as far as the Aristotelian era. Both Aristotle (330 B.C) and Lucretius (approx. Three centuries later) reported the visual phenomenon as an effect of the stimulus water (although Lucretius went further by describing a MAE direction). It was not until the early nineteenth century that further research was noted. Purkinje (1820) and Addams (1834) both reported the causation and directional flow of the MAE with reference to cavalry parades and waterfalls as their respective motion examples. From this period up until the mid-twentieth century further research had been sporadic. This is perhaps due to the fact that so little was known of the neuroanatomy of the visual system. Wohlgemuth (1911) had however reviewed many of his predecessors work as well as reporting many of his own studies. An important aspect of his research came with the discovery of the storage effect of MAE's. After adaptation to stimuli, the testing eye is closed for th...

    Read More

  • Microorganisms In Robert Hooke's Uncovering A Tiny World

    1553 Words  | 4 Pages

    Apfeldorf’s article “Uncovering a Tiny World” discusses Hooke’s book which is known for its microscopic illustrations of insects and microbes that Hooke had drawn as he viewed them under the microscope. His elaborate drawings of tiny objects and insects were the scientific evidence that supported his claims of the significant value of the microscope to science and the many ways it could be used. The book also contained a description of how to make a powerful microscope with a spherical lens, much like Leeuwenhoek’s glass pearls. Leeuwenhoek traveled to England that same year and is believed to have obtained a copy of Hooke’s book and

    Read More

  • The Field of Ergonomics

    1948 Words  | 4 Pages

    Observer Performance and Visual Search." Journal of Digital Imaging 22.4 (2009): 363-8. ProQuest. Web. 9 May 2014.

    Read More

  • The Whos and Whats of Sociology

    1645 Words  | 4 Pages

    ''These two approaches can be compared to a telescope. One end will show everything in enlarged form and in great detail (the microview), the other will display a world that is small and distant (the macroview). Both are 'true' pictures of the same thing.''

    Read More

  • Trilobites

    852 Words  | 2 Pages

    the eyes had densely packed lenses and may have served merely as a light sensitive

    Read More

  • Sir Isaac Newton: Taking a Step Forward

    1040 Words  | 3 Pages

    An impressive feat Sir Isaac Newton accomplished was the evolution of optics. Every scientist since Aristotle had believed light to be a simple entity, but Newton thought otherwise through his studies and building telescopes. It was thought that, “The idea that visual perception involves a medium somehow relating the beheld to the beholder is as old as ancient Greece,” (Darrigol 117). Isaac Newton challenged old ideas after an experiment with a prism and how it refracted light, as he saw this happen in a telescope where he saw the rings of colors distorting the image. This lea...

    Read More

  • Eye Spy

    787 Words  | 2 Pages

    ... hole of the pupil. By investigating a rented piece of calcite, I could find how the compound eye structure could not work and how it cannot successfully reflect light at a direct angle.

    Read More

  • Mathematics of Human Vision and Corrective Lenses

    1683 Words  | 4 Pages

    The four main components of the eye that are responsible for producing an image are the cornea, lens, ciliary muscles and retina. Incoming light rays first encounter the cornea. The bulging shape of the cornea causes it to refract light similar to a convex lens. Because of the great difference in optical density between the air and the corneal material and because of the shape of the cornea, most of the refraction to incoming light rays takes place here. Light rays then pass through the pupil, and then onto the lens. A small amount of additional refraction takes place here as the light rays are "fine tuned" so that they focus on the retina.

    Read More

  • Mathematics of Telescopes

    1229 Words  | 3 Pages

    The principle behind the refractive telescopes is the use of two glass lenses (objective lens and eyepiece lens) to gather and bend parallel light rays in a certain way so that the image fits the size of the eye's pupil. Light rays is gather through the opening of the telescope called the aperture and passes through the objective lens and refracts onto a single point called the focal point. From there the light rays continue the same direction until it hits the eyepiece lens which also refract the light back into parallel rays. During the process, the image that enters our eyes is actually reverse of the original image and magnified because the size in which we preceive the image.

    Read More

  • The Cell

    3247 Words  | 7 Pages

    The cell is the fundamental structural unit of all living organisms. Some cells are complete organisms, such as the unicellular bacteria and protozoa; others, such as nerve, liver, and muscle cells, are specialized components of multi-cellular organisms. Cells range in size from the smallest bacteria-like mycoplasmas, which are 0.1 micrometer in diameter, to the egg yolks of ostriches, which are about 8 cm (about 3 in) in diameter. Although they may differ widely in appearance and function, all cells have a surrounding membrane and an internal, water-rich substance called the cytoplasm, the composition of which differs significantly from the external environment of the cell. Within the cell is genetic material, deoxyribonucleic acid (DNA), containing coded instructions for the behavior and reproduction of the cell and also the chemical machinery for the translation of these instructions into the manufacture of proteins. Viruses are not considered cells because they lack this translation machinery; they must parasitize cells in order to translate their own genetic code and reproduce themselves.

    Read More

  • How Models Can Or Hinder The Search For Knowledge?

    1300 Words  | 3 Pages

    In addition to this use of models, the natural sciences also use models to illustrate observations. When looking through a microscope one would need to model the cell or any such microscopic being, however it is impossible, as well as illogical, to grab wha...

    Read More

  • History of the Cell

    469 Words  | 1 Pages

    The microscope created new possibilities in the study biology. It allowed scientists to look into a completely new view of cellular biology. Galileo is credited with the invention of the microscope. Two of the main pioneers in microscope usage were Robert Hooke and Antonie von Leeuwenhoek.

    Read More

  • Microscopy Essay

    1561 Words  | 4 Pages

    Technology in the last few decades has impacted our understanding of biological entities greatly, the genome project being a prime example. The progress that biology sees follows closely with the development of new technology. It is very important to understand and visualise the composition and structures of biological materials or samples in order to extend and correlate this to the principles of life. Microscopy is a by far the most used and the most relevant technique in this regard. However the short comings in the technological aspect of this greatly limit the usage of this to comprehend the specifics.

    Read More

More about Microscopy

Open Document