Hotshot Genius Tools: What You Should Know About Phase Contrast Microscopes
This is an article explaining everything you need to know about phase contrast microscopes. In the world of science, the phase contrast microscope is an indispensable tool. Without it, scientists and researchers alike cannot make the breakthrough discoveries they have today. A scientist without his microscopes, or phase contrast microscopes for the matter, is not a scientist at all.
There many very high quality and high tech microscopes being used in research laboratories worldwide. They have specific uses and specialties. The phase contrast microscope is just one of them. These have been around from as early as the 1900s and are believed to be developed by Frits Zernike, very deserving of the Nobel Prize that he was awarded in 1953. The phase contrast microscopes are very ideal in viewing specimens that are transparent and very minute in size, as are most microorganisms. Some microscopes require the staining or the coloring of a specimen so that the quality can be enhanced for better viewing. This more often than not kills the specimen and makes it immobile. With phase contrast microscopy, staining is not needed to view the specimens clearly. Cell samples can be viewed in their normal state. As the name states, phase contrast microscopy allows for the visualization of the specimen in different phases of light, some phases that cannot even be seen by the naked eye. Some may state that these are just views from different angles, but scientist counter that the difference in angle is sometimes key to the progression and success of the study. Any angle would be a useful angle.
The article describes how to work a phase contrast microscope properly. Before anything else, make sure that all of its parts are accounted for. These include the objective lenses, the telescopic tube and last but certainly not the least, the Zernike phase condenser lens. There are knobs and screws that allow for the easy manipulation of the slide and it is placed on the stage. There is also a bright field setting should the user wishes to view the specimen under bright field microscopy. The condenser position can also be adjusted to maximize the visualization of the specimen to the user. Several terms are defined in relation to phase contrast microscopy that may deem helpful for first time users. Benefits of the phase contrast microscopes so far outweigh its limitations. Scientists can now distinguish cells that are nor functioning as they should, and relating these to disease conditions. The application from research to medical science is greatly significant. Better quality, clearer images are produced by the phase contrast microscope as compared to other microscopes. Specimens that were previously very difficult to distinguish as they cannot be seen clearly in an ordinary bright field microscope can now be scrutinized under a phase contrast microscope. Minimal or no preparations are needed to view the specimens.
The preservation of cells that is to viewed under the phase contrast microscope is also discussed further. The article also includes how to view thick specimens. Not everyone can master the use of the phase contrast microscope, so don’t be discouraged in the beginning. A little practice and a little patience make for improvement in time.
ORIGINAL TEXT: Every profession makes use of its own kind of tools. Carpenters have their hammers and saws, artists have their paint brushes and sketch pads, and budding scientists have their hotshot genius tools, tools that only people of superior intelligence can hope to comprehend and use. An example of such is phase contrast microscopes.
Understanding the PHASE CONTRAST Part of Phase Contrast microscopes There are various types of microscopes in use today. Phase contrast microscopes are just one of them, and phase contrast microscopes have been used since early 1900’s. Them method behind phase contrast microscopes was formulated by Frits Zernike. Phase contrast microscopes are suitable for samples that are see-through like lots of microorganisms.
The use of phase contrast microscopes had provided a great contribution to society, and that’s why it’s certainly fitting Frits Zernike received the Nobel Prize for Physics in 1953.
How Phase Contrast microscopes Work The main principle to remember about phase contrast microscopes is that staining is unnecessary to view samples through phase contrast microscopes. It’s why phase contrast microscopes are great to use for observing cell-related samples.
Simply put, phase contrast microscopes work by supplying visible images of samples in different kinds or phases of light, phases which are sometimes invisible to the naked eye. Although some may think that this merely means looking at samples at a different angle, these “angles” that you can only see through phase contract microscopes actually provide a wealth of information that help scientists understand what was formerly undefined for them.
How to Set Up Phase Contrast microscopes First thing to do is to check if all essential parts of phase contrast microscopes are present: four objective lenses, the telescopic tube in which you’re allowed to view the sample, and lastly, the Zernike phase condenser lens.
Screws for adjusting are provided to select the proper positioning of phase rings of phase contrast microscopes. At the opposite of these screws is a knob which you can turn to adjust settings of phase contrast microscopes. On the wheel, you’ll also find a button that indicates brightfield settings for phase contrast microscopes. When you utilize phase contrast microscopes with BF settings, no phase is applied to view samples. On the sides of phase contrast microscopes are a set of control buttons to allow users to adjust the condenser position of the phase contrast microscopes.
Terms to Remember When Using Phase Contrast microscopes Phase Objects – this term refers to samples observed through phase contrast microscopes Optical Microscopy – a branch of science in which phase contrast microscopes are extensively used; phase contrast microscopy however is the primary branch in which phase contrast microscopes play a key role. Benefits of Phase Contrast microscopes Understanding the Cause of Diseases – Thanks to phase contrast microscopes, scientists are now able to see malfunctioning cells in a better light, literally and figuratively speaking. Image Enhancement – Some specimens are already visible through other types of microscopes, but images produced are fuzzy or unclear. The use of phase contrast microscopes however can produce images of the same samples, but this time, with better quality. From Invisible to Visible – Phase contrast microscopes also made previously unseen specimen now visible and available for study. Living cells are just one of such specimens that phase contrast microscopes had been able to shed light on. No Preparation Needed – Unlike other microscopes, phase contrast microscopes do not require all of its samples to be prepared before viewing. Just think of phase contrast microscopes as the microwave oven of microscopes! Cell Preparation for Phase Contrast microscopes Cells which can be cultivated outside its natural habitat are placed inside a cell culture medium. These cells can only be viewed through phase contrast microscopes when they’re reached the required percentage of growth.
Preservation of Cells Viewed for Phase Contrast microscopes Certain cells require fixing before they can be viewed through phase contrast microscopes. Different methods are used to for cell-fixing, but the most popular fixing techniques for cell samples of phase contrast microscopes are freezing, drying, and application of chemicals.
Viewing Thick Specimens through Phase Contrast microscopes Lastly, specimens that are of considerable size or thickness must be sliced into several pieces before they can be successfully viewed through phase contrast microscopes. A microtome can be used for easy specimen cutting.
Although understanding how phase contrast microscopes work may seem complex at first glance, give yourself a little time, and you and phase contrast microscopes are sure to be best friends soon. Be proud of yourself if you’ve mastered the use of phase contrast microscopes because not everyone can certainly match that!
