The amount of a specimen that is in focus at any given time is called the __________. True - water or other liquids will damage the objective lenses. To best control the magnification of the microscope. Light microscopes are used by scientists and science lovers alike to magnify small specimens like bacteria. Doing so could _____ the slide or the __________. compound light microscope. greatest at low power and decreases as magnification increases. When preparing a wet-mount it is important to cover the specimen with a cover slip to ensure that the objective lenses remain dry. • Total magnification of a specimen = Additionally, these common chemical compounds can sometimes be used to make very effective commercial products. is the entire area that is seen when looking through the ocular lenses. This type of microscope uses … As magnification increases the field diameter decreases. If the field of view is too bright, the light intensity can be lowered by turning the fine adjustment knob. In this lab, parts of the microscope will be reviewed. The ability to distinguish between two objects located close to each other is called ____________. As the magnification __________, the field diameter ___________. Four basic steps in successfully viewing a specimen under the microscope? After Taking The Tour Of The Virtual Microscope, Label Each Part Of The Light Microscope Below. Use of light microscope and stereomicroscope: measuring microscopic objects. Lab Exercise: Microscopy I, an Introduction to the Compound Light Microscope (Revised, Spring 2012) page 2 Activity 1: Microscope Care and Storage (The Scope Check ) Successful operation of the microscope depends upon the proper maintenance and correct use. Completely unwrap the electrical cord before plugging in the microscope. The _________ controls the amount of light passing through the slide. Learn vocabulary, terms, and more with flashcards, games, and other study tools. All of the following are correct steps in focusing on a specimen under the microscope EXCEPT which statement? A microscope is an optical instrument that uses a lens or a combination of lenses to produce magnified images of small objects, especially of objects too small to be seen by the unaided eye. Always remember that a microscope is an _________, _________ instrument that should be handled carefully. ______ __________ moves the stage up and down a large amount for coarse focus. III. The purpose of this lab was to discover how to use and take care of a compound microscope. First, the iris diaphragm creates an aperture that regulates the amount of light passing through the condenser and ultimately the ocular lenses. At higher magnification less of the slide is visible in the field of view. This type of microscope uses visible light focused through two lenses, the ocular and the objective, to view a small specimen. You will also use a slightly different type of light microscope called a stereoscopic dissecting microscope. - A blue filter could be inserted into the filter holder. 3. It is important to lift them from the cabinet with the use of two hands. 9 09 4. The following are all procedures to measure the field diameter EXCEPT which statement? Only cells that are thin enough for light to pass through will be visible with a light microscope in a two dimensional image. The term _____ can be translated as, "to view the tiny". Always use low magnification during your initial observation. By focusing light on their lenses, they allow you to examine the smallest cellular constructs that make up the specimens. The term microscope can be translated as “to view the tiny,” because microscopes are used to study things that are too small to be easily observed by other methods. The virtual microscope is a little more complicated than the microscope we used in the lab, but with patience, you should be able to complete this activity. A . One hand should grab if true, write t on the answer blank. Because most microorganisms are much smaller than 0.1mm, a microscope must be utilized in order to directly observe them. Your grade for the lab 1 report (1A and 1B combined) will be the fraction of correct responses on a 50 point scale[(# correct/# total ) x 50]. Use the knobs on the mechanical stage and adjust the slide so that it is centered over the opening. Introduction . • Visible light is passed through a specimen and then through glass lenses that magnify the image. being able to see adjacent objects as separate. What are the two ways the brightness or light intensity can be lowered. _____ use the ______ adjustment when using ____ power. In focusing on a specimen under the microscope, you must. 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