answersLogoWhite

0


Best Answer

Because it is too hard to find a specimen on high power. Easier to find them and focus them on low power and then increase the magnification and fine-tune the focus to get a better, closer look.

User Avatar

Raheem Raynor

Lvl 10
2y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

14y ago

This is done to control the focus, especially when attempting to view microorganisms at 1000x. If you focus too fast, there's a chance of breaking the slide and contamination of the microscope stage. It is always best to go slow, take your time, and gently use the fine focus to locate your specimen at high power.

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

If you set the power to high before centering the sample, the sample will have appeared to move and you will see only one side of it or the other. If the sample is centered, then when put on high power, you will still be looking at the center

This answer is:
User Avatar

User Avatar

Wiki User

14y ago

The proper way to focus a microscope is to start with the lowest power objective lens first and while looking from the side, crank the lens down as close to the specimen as possible without touching it. Now, look through the eyepiece lens and focus upward only until the image is sharp.Once the image is sharp with the low power lens, you should be able to simply click in the next power lens and do minor adjustments with the focus knob.

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

The high power objective's field of view is much smaller than the low power field of view. It is much easier to locate a specimen on low power, focus, and then change to high power. You may then need to use the fine adjustment knob to bring the specimen into sharper focus, but never the coarse adjustment knob on high power.

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

black and blue black and blue.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why the specimen must be centered in the field of view on low-power before going on to high-power?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Why must the specimen be centered before switching to high power on a microscope?

I don’t know


The specimen must be centered in the field of view on low power before going to high power?

Because when looking at it from far, then you can see more of the specimen, However, when you're looking at it closer up in a high power mode, then you will see less of the object, but much closer.


Why the specimen be centered in field of view on low power before going to high power?

Because it is too hard to find a specimen on high power. Easier to find them and focus them on low power and then increase the magnification and fine-tune the focus to get a better, closer look.


Why should the specimen being viewed through the microscope be centered in the field of view before you increase the magnification?

as you zoom in the view gets bigger and if its not in the middle you wont be able to see it properly .


Why is it necessary to take note on the color of the specimen before drying or before soaking it in faa solution?

There are a few reasons for this. First, the color can give you an indication of the health of the specimen. If the specimen is very pale, it may be sick or dying. Second, the color can give you an indication of the age of the specimen. If the specimen is very young, it will be a different color than if it is older. Finally, the color can give you an indication of the sex of the specimen. If the specimen is male, it will be a different color than if it is female.


Why must the specimen be centered before switching from low power to high power?

Because high power takes up a much smaller area, and you may not be able to find the specimen if it's off to one side. C:


Why is it important to focus specimens under the Low Power Objectve before observing it under the High Power Objective?

It allows you to center the specimen, and if it is set up correctly, then when you switch objectives it should still be there and only need fine focusing. It also reduces the chance of crushing the specimen and/or breaking the slide or the lens as the LPO is further away from the slide than the HPO.


Why the specimen should be dried before positioning and mounting?

Because it will change shape as it dries, so mounting it while it is wet would cause excessive stresses.


Why is it important that the object is centered in the field of view before switching to a higher power objective?

WHY IS IT IMPORTANT THAT THE IMAGE IS CENTERED IN THE FIELD OF VIEW BEFORE SWITCHING TO A HIGHER POWER


Which type of urine specimen is needed to detect an infection?

Typically midstream urine is taken as a urinary specimen, when you have urinary tract infection. It is good precaution to scrub the genital area with some mild soap like glycerin soap, before you take the urine specimen.


Why a drop of water is added to the onion cell before it is covered with a cover slip?

prepared by adding water to the specimen which increases its translucency and makes it easier to stain. It also has a tendency to cause the specimen to flatten which makes the specimen easier to view.


Why should you air-dry a specimen before heating in laboratory experiments?

You should air-dry a specimen before heating it in the labratory in order to get rid of any impurities. Also, it helps you record the best and most accurate figure while heating.