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Which objective must be in position when you first set up a microscope?
Wiki User
∙ 12y ago
I have always had the longest objective in position (pointing down), then lowered the lens to what I thought would be close to a good focus. This way, you can rotate the turret to the shorter lenses, and be assured that the lens body will not strike the stage or slide.
Wiki User
∙ 12y ago
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How do you work a microscope?
A confocal microscope works by a laser shining on two mirrors mounted on motors which allows it to scan the sample then the emitted light is focued through the pinhole to a detector which relays an image to the lens.
What power must be in place when you first find an image in the microscope?
You should first use the lowest power setting of a microscope to find an object and then center it within the viewing area. Then, when you switch to the next higher magnification, your target should still be close to the center and easier to find and focus on.
What power must be in place when you first find an image on a microscope?
idk
Why is it necessary to calibrate the ocular micrometer with each objective?
The ocular micrometer is inside the ocular lens, it will not change size when the objectives are changed. Therefore, each objective lens must be calibrated separately. Ocular micrometers have no units on them - they are like a ruler with marks but no numbers. In order to use one to measure something under a microscope, you must assign numbers to the marks. This is done by looking through your OCULAR micrometer at a STAGE micrometer mounted on a slide. The stage micrometer is just a ruler with fixed known distances, so you can use it to tell how far apart marks are on the ocular micrometer. This has to be done because the marks on the ocular micrometer are different distances apart depending on the magnification used on the microscope. It must be calibrated for each objective.
For a microscope to be useful it must combine two properties?
it must combine magnification and resolution
Why the objective lens of a refracting telescope is much larger than the objective lens of a compound microscope?
A telescope must grasp the light from enormous distances. A microscope's task is to refine tiny images at very close distances.
Why do you use on or slide to be examined with the oil immersion objective?
If you are using the oil immersion objective on a microscope, you must use oil to increase the resolution of the lens. These lens are used at very high magnification.
How do you work a microscope?
A confocal microscope works by a laser shining on two mirrors mounted on motors which allows it to scan the sample then the emitted light is focued through the pinhole to a detector which relays an image to the lens.
What is the objective lens used to locate the specimen and the first focus?
When viewing a specimen, you must always use the lower power objective lenses first. Low power lens gives the widest field of view and makes it easier to find the specimen when you look through the microscope. Finding the specimen at high power, without first centering it in the field of view at low power, is nearly impossible.
What power must be in place when you first find an image in the microscope?
You should first use the lowest power setting of a microscope to find an object and then center it within the viewing area. Then, when you switch to the next higher magnification, your target should still be close to the center and easier to find and focus on.
How do you write microscope in a sentence?
I must have left my microscope in the car.
What is OIO in microscope?
oIO, stands for oil immersion objective. it was discovered during 1870. the OIO, magnifies the actual size of the specimen , 100 times, with the aid of placing a drop of ceddar oil at the top of the coverslip in slide. Remember that the OIO objective must touch the surface of the oil.
What power must be in place when you first find an image on a microscope?
idk
What is the total magnification of a microscope if the microscope is on low power?
Total magnification will be ocular magnification multipled by the objective magnification i.e. 10 x 25 = 250x.AnswerThe last time I checked if the eyepiece is on Low Power that means it is 10x. You must multiply the additional 20x, so the total magnification is 200x.
Why must you always return to the low power objective before you put the microscope away?
The higher power objectives are longer and can result in scratching the lens the next time someone uses the microscope. It also encourages the user to remove any slides that may have been left which they otherwise would have missed.
Why must initial focusing of an object be under the low power objective and not under the high power objective?
Low power objective is like our eye if we want to see we can just see normally but if we want to see something very small but want to see properly at that particular part then we always go for some lens of something powerful. That's the same thing when we want to know something deeply we go for high power microscope to read a more detailed study of a particular part of object under the microscope.
What is the total magnification of a compound microscope?
The ocular lens are 10x magnification. Objective lens are 4x, 10x, 40x, 100x magnification. So once an objective lens is selected, the total magnification would be given by its product with the 10x magnification of the ocular lens. For example, if objective lens selected is 40x, total magnification would be: (10x)(40x)=400x total.
