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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Why is it advisable to start first with the low-power lens when viewing a slide?
which objective lens is in place if the object you are viewing is magnified 1000x? (assume ocular lens magnification = 10x)
Which objective is never used with the course focus adjustment knob?
Chapter 1 Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
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Similar questions
- Why 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_forwardwhat happens to brightness of the field of view when you switch to the high power objectivearrow_forwardWhich objective lens has the least working distance?arrow_forward
- If 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_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_forwardYou should always put oil on the slide before you try to get it into focus at low magnification. You should always put oil on the slide before you try to get it into focus at low magnification. True Falsearrow_forward
- How do you identify which objective lens are you using to view your sample?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_forwardThe numerical aperture of the an objective lens: indicates magnification indicates the clarity indicates light capturing ability indicates the approprite usearrow_forward
- How can you improve contrast when viewing a specimen?. What should you do if you have difficulty focusing in high power?. Why is important to use the fine adjustment nob only when focusing while using the high dry objective lens?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_forwardwhat is the total magnification if the objective lens is 4x and the ocular lens is 10x?arrow_forward
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