Because you are at the highest magnification, only turn the fine adjustment knob when you are using the high-powered objective lens, and not the coarse adjustment. Otherwise you risk getting your sample out of focus, and you will probably only be able to refocusby starting with the lowest power objective lens.
Don't touch the lens and use the fine adjustment knob instead of the coarse
You must be very careful that you don't crush the cover slip and the slide.
compound microscope
This depends entirely on the microscope you are using. Typical high lenses are 150x to 250x, some to 400x.
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.
Don't break the cover or the glass.
the high power lens uses a lot of light scorce so it could burn your eyes
Not to be taken during pregnancy.
i have no idea lol
Don't touch the lens and use the fine adjustment knob instead of the coarse
vhb
Ultrasonography procedures are safe, noninvasive, and painless. No special precautions are necessary.
electron micrograph
They took great care to make sure they had taken the necessary precautions to ensure a smooth mission. Some synonyms for precautions are safeguards, provisions, and protections.
Using high power objective lense
if you're just using it(in the middle of looking into somthing). make sure nothing is around the table which can make the scope fall
The stage of the microscope should be kept clean and dry A microscope must always be carried with both hands. One holds the limb while the other is placed under the base to provide support