GENERAL HISTOLOGY

Detailed explanation-1: -The objective lenses of compound microscopes are parfocal. You do not need to refocus (except for fine adjustment) when switching to a higher power if the object is in focus on a lower power. The field of view is widest on the lowest power objective. When you switch to a higher power, the field of view is closes in.

Detailed explanation-2: -When you switch from low-power objective lens to a higher-power objective lens, what happens to the working distance between the lens and the coverslip? It decreases. When you change from a low-power objective lens to a higher one, what happens to the field of view? It increases.

Detailed explanation-3: -When going from low to high power, the light intensity will increase or decrease and the field of view will increase or decrease. When the magnification increase, the image is bigger or smaller and the depth of field will increase or decrease.

Detailed explanation-4: -The specimen must be centered in the field of view on low power before going to high power because on high power, it is difficult to find the specimen.

Detailed explanation-5: -Revolving Nosepiece or Turret: This is the part that holds two or more objective lenses and can be rotated to easily change power.