Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
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Chapter 1, Problem 2Q
Summary Introduction
To write:
The objective lens that is closest to the slide when it is in focus.
Introduction:
Microscopy is a technique of observing an object under a microscope that is not observable with naked eyes. The types of microscopy include scanning probe microscopy, electron microscopy, and optical microscopy. Optical microscopy uses light for illuminating and lenses to magnify the sample.
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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 1 Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
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Similar questions
- Which objective is never used with the course focus adjustment knob?arrow_forwardWhat 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_forwardwhat happens to brightness of the field of view when you switch to the high power objectivearrow_forward
- Why 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_forwardWhy is it important to use immersion oil when using the 100X objective? What do you think would happen if you tried to view a slide using the oil immersion lens but forgot to add the oil?arrow_forwardWhich power (low or high) will magnify the object more?arrow_forward
- Can you use the fine adjustment knob so that you can focus on all three threads simultaneously when viewing them under high power? Why or why not?arrow_forwardWhat is the primary difference between the method of focusing used by the eye and by a camera? Explain. *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
- The most suitable angle for the cone of vision for drawing perspective is 60° 45° 30° 15°arrow_forwardWhy must the subject stand 20 feet from the Snellen eye chart to test distance vision?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
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