Friday, June 13, 2008

The Parts and Functions of the Microscope...




Does the microscope have any effect on today’s society? There are many different types of microscopes from inverted, forensic, industrial and these are just a few. Microscopes are an invaluable tool that is used in today’s research and education. It has helped major discovers in biology, medicine and materials research that are based on the advances that happens with the microscope. Without the microscopes there would probably be no new discovers on medical issues or even in the science field.The microscope has made many changes since the first discovery of it in 1590. It was the first light microscope that was invented by two Dutch spectacle makers, Zaccharias Janssen and his son Hans. They first discovered it by experimenting with several different lenses in a tube; they later found out that objects appear enlarged. But the major father of the microscope would have to be Anton Van Leeuwenhoek of Holland. He worked in a goods store which happened to have magnifying glasses; this helped him in building his microscopes. Anton was the first to discover many things with the microscope such as bacteria, yeast plants, the teeming life in a drop of water, and the blood corpuses in capillaries. During Aton's lifetime he used the lenses to do studies on varies things both living and none living and then later wrote his findings down. Fewer studies were then found on the microscope till the 19th century when the fine optical equipment was invented by Charles A Spencer. Later on in the 1930s the electron microscope was introduced, this helped a great deal. They allowed you to view objects as small as the diameter of an atom. Even though this is just a couple of findings with the microscope you can just see what a huge affect it has on today’s lives.There are many different parts to a microscope the most important thing is to figure out the different parts and then learn what each one does. When I had to learn all the different parts for my biology class, it was best for me to find a picture of the microscope and label the different parts. Each part is just important as the next, if you don’t do a certain thing right then you will not see the images, or will not be able to find it. These are the most important parts that you should know before you start using a microscope. The stage where you set your slides on it after you have chosen the slide you are going to be viewing. Condenser focus knob: this control is used to precisely adjust the vertical height of the condenser. Fine focus control allows for precise focusing of the slide. Objective Lenses are usually always consisting of 4x, 10x, 40x, and 100x power. The shortest lens is the lowest power while the longest is the greatest power. Iris or Diaphragm is the function of transparency in the slide and the degree of contrast you desire. The last piece that is very important the ocular or also known as the eyepiece this contains two or more pieces to bring the images into focus for the eye to see. While dealing with a microscope it is best to look at the microscope while you adjust these certain pieces, choose the slide your going to look at, scanning the lens in place, specimen centered then open iris before doing this, and then start the stage at the top position. The next things are best to do while you are looking through the eye piece: use your focus, set your iris the degree of contrast you want to use, adjust the fine focus, and after you have set the fine focus center your image.

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