1. Match: Read about each microscope part. Match the description to the part on the diagram. B Stage: Platform where a slide is placed. Eye piece: Lens at the top of the microscope that the user looks through. This lens most commonly magnifies a sample by 10x. Coarse focus knob: Large knob that moves the stage up and down to focus the sample. Fine focus knob: Small knob that moves the stage over a short distance to refine the focus. Objective lens: A second lens that further magnifies the sample. Microscopes usually have several objective lenses with different magnifications. Slide: A rectangular piece of glass upon which a sample is mounted for viewing under a microscope.

1. Match: Read about each microscope part. Match the description to the part on the diagram. B Stage: Platform where a slide is placed. Eye piece: Lens at the top of the microscope that the user looks through. This lens most commonly magnifies a sample by 10x. Coarse focus knob: Large knob that moves the stage up and down to focus the sample. Fine focus knob: Small knob that moves the stage over a short distance to refine the focus. Objective lens: A second lens that further magnifies the sample. Microscopes usually have several objective lenses with different magnifications. Slide: A rectangular piece of glass upon which a sample is mounted for viewing under a microscope.

Basic Clinical Laboratory Techniques 6E

6th Edition

ISBN:9781133893943

Author:ESTRIDGE

Publisher:ESTRIDGE

Chapter1: The Clinical Laboratory

Section1.10: The Microscope

Problem 18RQ

See similar textbooks

Similar questions

3. Please number these steps, in the order they should be completed when using a microscope. Remove specimen, lower stage, wrap cord, and return covered microscope to numbered shelf. Move to other objective lenses to increase magnification. Rotate lowest-magnification objective lens into position (probably 4x or 10x). Clean all lenses with lens paper. Place specimen on stage. Adjust chair to a comfortable height. Use coarse focus knob to adjust stage until an image is visible. Be careful to use only the fine focus knob with the longest objective lenses.
Match the part of the microscope with its use. Dragged and dropped options on the right-hand side will be automatically saved. For keyboard navigation... SHOW MORE Stage Nosepiece Vertical Stage Knobs Course and Fine Adjustment Knobs Iris Diaphram III ||| Allows for changing objective lenses Move the stage side to side Hold the slide in place Control light passing through the stage Move the stage up and down
Put the steps for using a microscope in order. While looking through the eyepiece, use the coarse adjustment knob to bring the object roughly into focus. Lower the stage as far away from the objectives as possible. Use the fine adjustment knob to bring the object into sharp focus. Turn on the light. Place the slide on the stage and center it. Turn the nosepiece to the lowest power objective.
Which of the following is a parameter of microscopy that can affect your ability to resolve a specimen using a compound light microscope? Question options: Contrast Resolving power All of the choices Numerical aperture
Total magnification of a microscope is determined by Multiple Choice dividing the objective magnification value by the ocular value. multiplying all objective magnification values together. adding all objective magnification values together. none of the above.
Which of these is NOT a best practice when using, handling, or storing a microscope and microscope slides? Do not touch the objective lenses. Store the slides in bright sunlight to prevent mold growth. Rotate the nosepiece to the lowest objective before storing the microscope. Keep dust away from the scope by covering it during storage.
The compound (bright-field) microscope is parfocal. It means that: Question 4 options: objective lenses are built into revolving nosepiece its lenses effectively decrease focal lenght can achieve maximum resolution lower than 0.2 μm image should remain in focus when objective lens is changed
4) Answer true or false to each of the following statements. On high power, you should use the coarse adjustment knob. The diaphragm determines how much light shines on the specimen. The low power objective has a greater magnification than the scanning objective. The fine focus knob visibly moves the stage up and down. Images viewed in the microscope will appear upside down. If a slide is thick, only parts of the specimen may come into focus. The type of microscope you are using is a scanning microscope. For viewing, microscope slides should be placed on the objective. In order to switch from low to high power, you must rotate the revolving nosepiece. The total magnification of a microscope is determined by adding the ocular lens power to the objective lens power.
A. Purpose: Figure 1 B. Materials: Microscope Magazine Slides and cover slips Paper towels Pipette Scissors C. Procedure: 1. Careful carry a microscope to your lab area. Make sure to hold it with one hand under the base and one hand on the arm as shown in Figure 1. 2. Plug the microscope in and turn it on. Take a moment to look at all the parts of the microscope. Then look at your ocular lens. What is the magnification of the ocular lens (eye piece)? Figure 2 3. Fill in the chart to show the total magnification for each objective lens. Magnification of Ocular Lens Magnification of Objective Lens Objective Lens Total Magnification Low Power Medium Power High Power
You have placed a microscope slide in a microscope and want to view it at with the 10X objective lens. List the steps that are necessary to set up and focus the microscope properly using the 10X objective lens.
PROCEDURE: 1. Set two pencils down parallel from each other. Make them about 2-3 inches apart as the length of your slides to keep things easy. 2. Stick a long piece of tape over the two pencils and to the table on either side of the pencils to hold the tape tightly between the two pencils like a bridge. 3. Don’t touch the sticky side of the tape or you will ruin the microscope. Drop a small drop of water onto the top of the tape using the pipette or medicine dropper. 4. Make 3-4 lines of tape and add a different-sized drop to each one. This will help determine what size of water droplet produces the biggest magnification. 5. Prepare a rectangular shape of plastic cover. Put a small slice of onion. Slide the rectangular shape of the plastic cover with the small slice of onion under the pieces of tape and observe the size of the onion on different droplets. Write your observations on the table below. No. of drops Observation
briefly describe the functions of the following parts of the microscope: course objective knob, condenser lens, diaphragm, objective lens, illuminator, fine adjustment knob, oil immersion.