Homework Answers
1. For observing the sample in 100x put 1-2 drops of immersion oil, for example, cedar oil, on the coverslip.
2. Rotate the diaphragm to the 100x lens. Now the space between the lens and specimen is covered by the oil and there is no air left. Air has a low refractive index than glass and thus the light rays bend when passing from glass to air. This can disturb the clarity of the specimen. Thus immersion oil is added. Moreover, it also reduces the friction and breakage of the glass coverslip and gives a clear and detailed view of the specimen.
3. Adjust the coarse knob to get an image of the specimen.
4. Then do the fine focusing with a fine focusing knob.
5. After observing the sample clean the lens with a tissue paper and with a solution such as a xylene.
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-). You have a specimen in focus on the 40X objective magnification. Detail the steps needed...
Could you solve these problems? If the right ocular is set at 64, what should the...
Could you solve these problems? If the right ocular is set at 64, what should the left ocular be set at? 46 640 64 6 Which knob do you turn away from you to raise the stage? Fine focus knob Coarse focus knob Light source knob Iris knob True or False? The course focus should be moved first when focusing on the image. True False What magnification should you move to after 10x? 4x 40x 400x 4000x What should be...
4. What is the total magnification you achieve using the following lenses? Total magnification Lens 10x...
4. What is the total magnification you achieve using the following lenses? Total magnification Lens 10x ocular lens 4X scanning objective lens 10X low-power objective lens 40X high-power objective lens 100X oil-immersion objective lens
If you observe a perfectly focused image through the 10x objective, but a blurry specimen upon...
If you observe a perfectly focused image through the 10x objective, but a blurry specimen upon switching to the 40X objective, what should you do first? If you observe a perfectly focused image through the 10x objective, but a blurry specimen upon switching to the 40X objective, what should you do first? a. check that your specimen is within your field of view. b. open the diaphragm to let in more light c.check that the objective is "clicked" into place....
hleppp Depth of focus refers to how much of the thickness of the specimen is in...
hleppp
Depth of focus refers to how much of the thickness of the specimen is in focus a particular magnification (ie, is the top, middle and bottom of the specimen in focus at the same time or as you focus up or down only the top middle, or bottom of the specimen is in focus Long depth of focus Short depth of focus Thickness of specimen 1. Obtain a prepared crossed colored thread slide and view using scanning (40X-total) power....
Imagine that you have two lens with different magnifications, i.e 4x, 10x, 40X, or 100X. Using...
Imagine that you have two lens with different magnifications, i.e 4x, 10x, 40X, or 100X. Using the letter "e" as you specimen, accurately draw the magnification and resolution of the specimen. Indicate on your diagram: 1. the working distance 2. the focal length 3. the focal point 4. the refraction of light rays through lens 5, the magnification relative to each lens 6. the resolution relative to each lens 7. the transversion and inversion
e Domain Eukarya; Algae In the lab, all student microscopes come equipped with 10X ocular lenses,...
e Domain Eukarya; Algae In the lab, all student microscopes come equipped with 10X ocular lenses, a 4x scanner objective lens, a 10X low power objective, a 40X high-dry objective and a 100x oil immersid lens. What is the total magnification when you use the 40X objective lens to look at a specimen? Select one: a. 400X b. 100X C. 1000X d. 40x e. 10x What characteristics or behaviors allow for an organism to out-compete others? ISPIRE 2&* TUDI What...
When you are attempting to focus the microscope on a specimen, you always start with the...
When you are attempting to focus the microscope on a specimen, you always start with the stage all the way [stage] and the [objective] objective in position above the specimen. down... oil immersion up... high power up... scanning down... high power down... low power
ur eyes. Each new lab day, as you begin to study your arst slide, repeat this...
ur eyes. Each new lab day, as you begin to study your arst slide, repeat this procedure, arssm increase or decrease the contrast by adjusting the iris dia- u em opening. Note that the maximum amount of light provides itle contrast. Adjust the aperture until the imageis sharp. littie Move the slide slowly to the right. In what direction does the image in the ocular move? n. Is the image in the ocular inverted relative to the specimen on the...
please please help with all of them no thorough explanation needed! 5. Select the most appropriate...
please please help with all of them no thorough explanation needed! 5. Select the most appropriate answer. When using a dichotomous key outside to identify unknown organisms one should A. not remove parts of the plant or disrupt the ecosystem B. be aware of hazards such as ticks and poison ivy C. should write down the steps followed on the key. D. Be aware that your best attempts to identify a specimen might be disrupted by the presence of sexual...
V Check Your Understanding 2.1 If a 4x objective is used, what is the total magnification...
V Check Your Understanding 2.1 If a 4x objective is used, what is the total magnification of a microscope 2.2 Which objective lens will give you the greatest resolving power? 2.3 To move a specimen to the upper left-hand field of view, which way must one move the slide? 2.4 As magnification increases, does the amount of light increase or decrease? 2.5 with increased magnification, what happens to the field of view?! 2.6 As magnification increases, the depth of field...
4. What is the total magnification you achieve using the following lenses? Total magnification Lens 10x ocular lens 4X scanning objective lens 10X low-power objective lens 40X high-power objective lens 100X oil-immersion objective lens
hleppp
Depth of focus refers to how much of the thickness of the specimen is in focus a particular magnification (ie, is the top, middle and bottom of the specimen in focus at the same time or as you focus up or down only the top middle, or bottom of the specimen is in focus Long depth of focus Short depth of focus Thickness of specimen 1. Obtain a prepared crossed colored thread slide and view using scanning (40X-total) power....
Imagine that you have two lens with different magnifications, i.e 4x, 10x, 40X, or 100X. Using the letter "e" as you specimen, accurately draw the magnification and resolution of the specimen. Indicate on your diagram: 1. the working distance 2. the focal length 3. the focal point 4. the refraction of light rays through lens 5, the magnification relative to each lens 6. the resolution relative to each lens 7. the transversion and inversion
e Domain Eukarya; Algae In the lab, all student microscopes come equipped with 10X ocular lenses, a 4x scanner objective lens, a 10X low power objective, a 40X high-dry objective and a 100x oil immersid lens. What is the total magnification when you use the 40X objective lens to look at a specimen? Select one: a. 400X b. 100X C. 1000X d. 40x e. 10x What characteristics or behaviors allow for an organism to out-compete others? ISPIRE 2&* TUDI What...
ur eyes. Each new lab day, as you begin to study your arst slide, repeat this procedure, arssm increase or decrease the contrast by adjusting the iris dia- u em opening. Note that the maximum amount of light provides itle contrast. Adjust the aperture until the imageis sharp. littie Move the slide slowly to the right. In what direction does the image in the ocular move? n. Is the image in the ocular inverted relative to the specimen on the...
V Check Your Understanding 2.1 If a 4x objective is used, what is the total magnification of a microscope 2.2 Which objective lens will give you the greatest resolving power? 2.3 To move a specimen to the upper left-hand field of view, which way must one move the slide? 2.4 As magnification increases, does the amount of light increase or decrease? 2.5 with increased magnification, what happens to the field of view?! 2.6 As magnification increases, the depth of field...
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