Scanning objective
Do not allow the high power objective to tough the lenses
Try it any other way and you'll see. The scanning objective has the largest field of view, the greatest depth of field, and the greatest working distance. It is the most forgiving objective. It is the easiest to find the specimen and focus on it.
remove the slide,return the low-power objective, use lens paper to clean the stage of microscope and the lenses
You don't have to its just to see the different cycles.
Scanning objective
Do not allow the high power objective to tough the lenses
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.
When viewing a specimen under the microscope, you should always start with the lowest magnification objective lens. This allows you to locate and focus on the specimen before moving to higher magnifications for a closer look.
Yes, it is recommended to store a microscope with the objective lens in place to prevent dust or debris from entering the lens threads and affecting the performance of the microscope. Additionally, storing the objective in place helps maintain the alignment and calibration of the microscope for accurate observations.
When focusing a microscope, you should start with the lowest power objective lens, typically the scanning objective (4x or 10x). This allows you to locate the specimen easily and focus without risking damage to the slide. Once the specimen is centered and in focus, you can switch to higher power objectives for more detailed viewing. Always use the coarse focus knob first, followed by the fine focus knob for precise adjustments.
When working with a microscope you should always take procauctions but one question I am asked a lot is When working with a microscope do you open or close the diaphram when working with the medium- and high-power objective nobs? The answer is you keep it open if you don't you won't be abler to see any thing.
so the objective lens will not touch the slide.
10x
low power objective lens to locate and focus on the specimen before moving to higher magnifications.
When focusing the microscope downward, you take the chance of damaging the expensive objective lens by crushing the slide trying to get it.
A microscope should be stored with the lowest-power objective lens in place to prevent damage to the higher-power lenses. It is recommended to keep the 4x or 10x objective lens in place for storage as they are less delicate than the higher magnification lenses.