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Why should the coarse adjustment knob on a microscope not be used with a high-power objective lens?
Wiki User
∙ 14y ago
with the high-power lens, very small adjustments can produce very large changes in focal field; the coarse adjustment knob simply moves things too quickly to be useful. further, on cheaper microscopes, the high-power lens is longer and closer to the target; using the coarse adjustment can bang the lens into the slide being viewed, which can damage the slide or the microscope.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoBecause you'll go way out of focus. Also, you can have the magnifier hit your smear. I learned this the hard way. You can turn it too much and you'll hear a thud. Then your smear can be ruined!
Wiki User
∙ 14y agothe coarse adjustment is not used for focusing high power, as a matter of fact it is used to focus objects of low power.
Wiki User
∙ 8y agoYou don't have enough control over the distance. You can also crush the slide and cover or you will move it too much and will lose focus.
Wiki User
∙ 11y agobc it can break the lenes
Wiki User
∙ 10y agoIt will crack your slide
Anonymous
it moves dramatically and if you move it too close you can cause your slide and the knob to break
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What part of the microscope should you used to focus the image when using high power objective lens?
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.
What is the picture of a microscope and what are the parts of a microscope?
Parts of a microscope are ocular lens, low power objective, nose piece, objective lenses, stage clips, light source, body tube, coarse adjustment, arm, diaphragm, eyepiece, base, stage, fine adjustment, mirror, stain, and high power objective.
What is the function of the coarse adjustment knob?
The function of a microscope's coarse adjustment knob is to improve focus on the object under study by adjusting the lens. Unlike the fine adjustment, coarse adjustment moves the lenses quickly.
What is a microscope big knob called?
Coarse adjustment knob.
What are the 18 parts of the microscope?
*Draw tube *Body tube *Coarse adjustment *Fine adjustment *Revolving nose piece *Dust shield *Stage *Stage clip *Intimation joint *Base *Arm *Low power objective *oil immasion objective *Condenser *Mirror
Which part of a microscope should be used with the low power objective but not with the high power objective?
Coarse Adjustment
What is coarse wheel adjustment on a microscope?
when should the coarse wheel adjustment be used
What part of the microscope should you used to focus the image when using high power objective lens?
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.
What is coarse adjustment in microscope?
The coarse adjustment knob allows quick displacement of the optical tube.
What is the picture of a microscope and what are the parts of a microscope?
Parts of a microscope are ocular lens, low power objective, nose piece, objective lenses, stage clips, light source, body tube, coarse adjustment, arm, diaphragm, eyepiece, base, stage, fine adjustment, mirror, stain, and high power objective.
What is accomplished by turning the coarse adjustment upwards Of microscope?
The coarse adjustment is used to focus in on the specimen. It accomplishes this by moving the stage or the upper part of the microscope.
What adjustment moves the microscope stage up and down?
Coarse adjustment
What is the coarse adjustment on a microscope?
It is the less precise focusing knob on a microscope.
6 How does the procedure for using the microscope differ under high power?
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.
What used for first focusing for the microscope?
the coarse adjustment
What on a microscope is used for first focusing?
coarse adjustment
What is used for first focusing on the microscope?
the coarse adjustment
