1 what is the difference between the coarse adjustment knob and the fine adjustment knob?
2.what are the different objectives lenses? how do they differ from one another?
3. what is the function of the iris diaphragm?
4.what part of the microscope further magnifies the image formed by the objective lenses? where is this part located?
2.what are the different objectives lenses? how do they differ from one another?
3. what is the function of the iris diaphragm?
4.what part of the microscope further magnifies the image formed by the objective lenses? where is this part located?
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1.COARSE ADJUSTMENT KNOB — A rapid control which allows for quick focusing by moving the objective lens or stage up and down. ... FINE ADJUSTMENT KNOB — A slow but precise control used to fine focus the image when viewing at the higher magnifications.
2.Classification based on Magnification
Classification based on MagnificationEssentially, objective lenses can be categorized in to three main categories based on their magnification power. These include: low magnification objectives (5x and 10x) intermediate magnification objectives (20x and 50x) and high magnification objectives (100x).
3.An iris diaphragm can reduce the amount light that hits a detector by decreasing the aperture, usually with "leaves" or "blades" that form a circle.
4.eyepiece
eyepieceIn modern microscopes, the eyepiece is held into place by a shoulder on the top of the microscope observation tube, which keeps it from falling into the tube. The placement of the eyepiece is such that its eye (upper) lens further magnifies the real image projected by the objective.
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