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∙ 13y agoNothing will happen because the coarse adjustment knob controls the position of the stage of the microscope, which is used to focus the specimen. This adjustment is independent of the choice of objective lens.
The coarse adjustment screw should be used with the low power objective to quickly bring the specimen into focus. Because the low power objective has a wider field of view and shorter focal length, the larger movements provided by the coarse adjustment screw are more suitable for rapidly adjusting the focus over a broader area.
The coarse adjustment knob on a microscope should never be used with the high-power objective lens. This can cause damage to both the lens and the slide being viewed. Instead, it is best used with the low-power or scanning objective lens for initial focusing.
First of all, one should never call it high power, it is morecommonly called the "high objective", yet that is not what this question is asking. To answer the question: You use the fine adjustment knob. This knob should be located near the coarse adjustment knob, on the opposite side of the microscope (at the same height as the coarse adjustment knob), or even as a separate knob protruding from the coarse adjustment knob. The fine adjustment knob is smaller in size. You should never, ever use the coarse adjustment knob under the high objective, you could scratch the microscope slide, cover slip, high objective lens, or in a worst case scenario break the high objective lens.
Because if you use the coarse adjustment under high power, there is a greater risk that you will crack the slide on the microscope and damage it. The fine adjustment only moves the objective lense small amounts and very slowly, so there is no chance that you will damage the slide.
The coarse adjustment knob controls the stage's vertical position in relation to the objective lenses. If improperly used under high power, it can damage the objective lens or the slide due to the rapid movement.
For low power you can use the coarse adjustment and fine adjustment for high power you should only use the fine adjustment because on high power, the objective lens is too close to the slide and using the coarse adjustment may scratch the objective lens.
The course-adjustment knob moves the stage up and down quickly, and using it with a high-power objective can potentially damage the objective or slide due to a rapid change in focus. It is best to use the fine-adjustment knob when using a high-power lens for precise focusing.
The coarse adjustment knob moves the objective a lot while the fine adjustment knob moves it just a little, so using the coarse knob under high power can cause the objective to hit the slide and potentially damage the slide or the objective. The fine adjustment knob provides more precise control for focusing under high power, allowing for better clarity and accuracy.
use the fine adjustment knob to get a better view of what you are looking at.For low power you can use the coarse adjustment and fine adjustmentfor high power you should only use the fine adjustment because on high power, the objective lens is too close to the slide and using the coarse adjustment may scratch the objective lens.
use the fine adjustment knob to get a better view of what you are looking at.For low power you can use the coarse adjustment and fine adjustmentfor high power you should only use the fine adjustment because on high power, the objective lens is too close to the slide and using the coarse adjustment may scratch the objective lens.
The adjustment knob that moves the body tube for focusing with the high-power objective lens is called the fine focus adjustment knob. It allows for precise adjustments to bring the specimen into sharp focus at high magnifications.
1: Eyepiece 2: Arm 3: Base 4:Stage 5:Stage Clips 6:Coarse Adjustment 7:Fine Adjustment 8:Low Power Objective 9:Medium Power Objective 10:High Power Objective 11:Mirror or Illuminator 12:Diaphagm
So you do not crack the high power objective lens - this lens is very fragile and expensive.
Using the coarse-adjustment knob with the high-power objective can result in the objective lens getting too close to the slide, potentially damaging the lens or slide. This can also lead to the objective lens hitting the slide, causing a loss of focus and potential damage to both the lens and the slide.
The coarse focus knob should be used with the low power objective but not with the high power objective. The point of using the coarse focus knob is to bring the specimen into general focus before fine-tuning with the high power objective, which requires more precise adjustments.
The coarse adjustment screw should be used with the low power objective to quickly bring the specimen into focus. Because the low power objective has a wider field of view and shorter focal length, the larger movements provided by the coarse adjustment screw are more suitable for rapidly adjusting the focus over a broader area.
The fine adjustment knob is used with the power objective on the microscope. Since the objective is already at the highest objective possible for that microscope, using the coarse adjustment knob would focus to much on the object making the details harder to read. Using the fine adjustment knob, you are able to see the fine details within the object or organism you are studying. The higher the power, the finer the knob and the lower the objective, the coarser the knob and objective.