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How does the numerical aperture of an objective lens affect resolution?
Question options:
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Numerical aperture is the optical plane visible for each objective lens |
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Numerical aperture decreases the amount of excess light on a specimen increasing the resolution and clarity |
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Numerical aperture is the loss of light due to changes in density between the specimen and the objective lens |
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Numerical aperture is a measure of the amount of light an objective lens can accept producing higher resolution and allowing smaller structures to be visualized with greater clarity |
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- Match the term with it's definition from the lab Group of answer choices Field of View [ Choose ] occular lens x objective lens the width of the circle of light the distance from the slide to the bottom of the lens clarity of an image Working Distance [ Choose ] occular lens x objective lens the width of the circle of light the distance from the slide to the bottom of the lens clarity of an image Resolution [ Choose ] occular lens x objective lens the width of the circle of light the distance from the slide to the bottom of the lens clarity of an image Total Magnification [ Choose ] occular lens x objective lens the width of the circle of light the distance from the slide to the bottom of the lens…To 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?Contrast for a specimen may be adjusted by _____. Question options: Adjusting the iris diaphragm Lowering the stage Turning off the substage condenser light source Changing the objective lens
- 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.What is reflectance spectrophotometry What are it's general principles Reflectance spectrophotometry limitation of techniques How to use reflectance spectrophotometry in existing clinical applicationsThe numerical aperture of the an objective lens: indicates magnification indicates the clarity indicates light capturing ability indicates the approprite use
- Using the scanning (4x) objective and the metric ruler, record the number of millimeters you see along with the letter “e.” Your value: 2 millimeters Convert the figure you attained to micrometers (1 millimeter = 1,000 micrometers). This is the diameter of the field of view for the low-power objective (LPD). The field of view is the circular field you see when you look through the oculars. The field of view changes at different magnifications. Your value (LPD): 2,000 micrometers -please help me with the problem in the picture.Which of the following is true about the relationship between depth of field and magnification? There is no relationship. When magnification increases, depth of field decreases. When magnification increases, depth of field increases. Stereomicroscopes offer a lesser depth of field than compound microscopes. The depth of field of a microscope determines how much magnification it can achieve.The objective lenses of the microscopes used in this course are all parfocal. What does having parfocal objective lenses mean? Question options: The slide has to be moved away from the objective lens (i.e., lowered) when switching between objective lenses. None of these choices The objective lenses have optimized light gathering capability. Once in focus, you may switch between objective lenses with only fine focus adjustment required.
- Which of the following is not required for a UV-vis absorption spectrophotometer? Group of answer choices camera detector monochromator light sourceTotal Magnification is obtained by Select one: A. Magnifying power of both the objective lens and eyepiece B. Magnifying power of eyepiece C. Magnifying power of condenser lens D. Magnifying power of the objective lenswhen you want to compute for the magnification of the specimen, what will you do with the eyepiece and the given objectives magnification
