Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Question
Chapter 2, Problem 8RQ
Summary Introduction
To review:
The changes in the angle of aperture and resolution with the increasing lens magnification.
Introduction:
The resolution of any object under a microscope is dependent upon many factors. They include the amount of magnification, the angle of the aperture as well as the numerical aperture, and the refractive index of the medium. An increase in magnification due to the natural process of detection of objects by the eye lens affects all other factors, especially resolution and the angle of aperture. There are physical limits within which these changes can occur.
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which objective lens is in place if the object you are viewing is magnified 1000x? (assume ocular lens magnification = 10x)
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Chapter 2 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 2.1 - Prob. 1TQCh. 2.1 - Prob. 2TQCh. 2.2 - Prob. 1TQCh. 2.3 - Prob. 1TQCh. 2.3 - Prob. 2TQCh. 2.4 - Prob. 1TQCh. 2.5 - Prob. 1TQCh. 2.5 - Prob. 2TQCh. 2.6 - Prob. 1TQCh. 2.6 - Prob. 2TQ
Ch. 2 - Prob. 1RQCh. 2 - Prob. 2RQCh. 2 - Prob. 3RQCh. 2 - Prob. 4RQCh. 2 - Prob. 5RQCh. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQCh. 2 - Prob. 11RQCh. 2 - Prob. 12RQCh. 2 - Prob. 13RQCh. 2 - Prob. 14RQCh. 2 - Prob. 15RQCh. 2 - Prob. 1TQCh. 2 - Prob. 2TQCh. 2 - Prob. 3TQCh. 2 - Prob. 4TQ
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- Indicate how the resolving power is determined and howresolution affects image visibility.arrow_forwardWhat is the relationship between the working distance of an objective lens and its magnification power?arrow_forwardWhat is the total magnification of 4x objective lens and diameter of field of view in micrometers?arrow_forward
- What is the magnification power of the objective lenses? How does the eyepiece compare to the objective lens? What is a magnification power? Differentiate between the fine and the coarse adjustment knobs.arrow_forwardIndicate how the resolving power is determined and how resolution aff ects image visibility.arrow_forwardTo obtain a 400X magnification image you may choose a 40X objective lens with a 10X projector lens, or a 20X objective lens with a 20X projector lens. What are the differences in their image quality?arrow_forward
- The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum angle of resolution change?arrow_forwardDIRECTION: 1) ILLUSTRATE THE SPECTROPHOTOMETRIC WORKFLOW PROCESS STARTING FROM THE LIGHT SOURCE UP TO THE READ-OUT DEVICE. MAKE SURE TO LABE COMPLETELY.arrow_forwardWhich lens requires the use of cedarwood oil? Why is it important to use oil when focusing under this lens?arrow_forward
- Describe how the field of view and the amount of available light changes when going from low to high power lenses.arrow_forwardWhy do you need to always focus slides initially using the x10 objective, even if you wish to usea higher magnification? (Use for report, write more as u can~)arrow_forwardIf the total magnification of a slide is 400x and the ocular lenses are 10x, what is the magnifying power of the objective being used?arrow_forward
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