0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What part of the microscope is used to focus initally under the scanning or low power?
For course focusing the primary stage is used.
Microscope Are all three colored threads in focus when using scanning power?
No they are not because of the focal plane. The focal plane is the the ability to visualize one item under the microscope over the others.
What is the magnification of the objectives of the microscope?
The magnification of the objective lens is 10x. The magnification of the scanning lens is 4x. Therefore if you are viewing an object under scanning power, the total magnification is 40x.
Which activity might lead to damage of a microscope and specimen?
using the course adjustment to focus the specimen under high power
What microscope is used to focus under low power only?
Course Focus Knob- low Fine Focus Knob- high -MC
Which objective scanning low power or high power allows you to observe the greatest number of cells within the field of view?
scanning
Why shouldn't you use the course adjustment knob when viewing the specimen under high power?
You shouldn't. You can cause the high objective to smash into the surface of the slide and crack it. Always use the fine adj. for high power and if you cannot get the high power in focus, reverse out to low again and do it over. Ideally, if you are in focus on low, you should be in focus at medium (may have to adjust a small amount) and if you are in focus under medium, when you swing the high power obj. into place, it should be in focus as well (may need a fine tune). Always reverse out and start all over again if you cannot focus it under high power. Deja Was Here
What is a scanning objective?
What is the function of the scanning objective on the microscope? What is the function of the scanning objective on the microscope? What is the function of the scanning objective on the microscope?
When do you use fine focus and the coarse focus knobs?
The fine focus knob is used to bring an object into fine focus, while the course focus knob is used to bring an object into approximate focus. The course focus knob should only be used on the low-power and scanning objectives of the light microscope. Using it on the high power microscope is okay, but you should be very careful. It is no recommended to use the course adjustment knob on the oil-emersion objective as it is so close to the stage and could lead to a potential break in the slide. Fine focus adjustment knob is useful to bring out the fine details in the specimen on your slide. Can be used on any of the objectives, but most receptive on the high-power and oil-emersion objectives.
When should you use scanning lens on the microscope?
The scanning lens of a compound microscope is used whenever a new slide is viewed or when the view of the specimen in the field of a higher power lens is lost. Think of it as the "neutral" position for the lens array. The scanning lens has the greatest working distance of the lens group on the microscope and is far enough away from the slide to avoid crunching the slide (and possibly damaging the lens) when attempting to focus. Many microscopes are parfocal, meaning that once you have a focused view of the specimen with the scan lens the image will be in, or very near in, focus when you swivel to a higher power lens. Very important! If you can't find a good view at higher power, or you "lose" the specimen after trying to focus with the fine focus knob only, go back to the scanner lens. Never use the coarse focus with anything but the scanner lens in position. Not doing this is probably the number one reason slides get crunched. And everyone will know because it usually makes an unmistakable sound that reverberates all over the lab.
What is a scanning objective len?
low power objective lens
What are the steps in observing a skin cell under a microscope?
the first thing you do you take microscope and you you do it like the low power to the highest power until it get focus.
