GENERAL HISTOLOGY

Detailed explanation-1: -COARSE ADJUSTMENT KNOB-A rapid control which allows for quick focusing by moving the objective lens or stage up and down. It is used for initial focusing. 5. FINE ADJUSTMENT KNOB-A slow but precise control used to fine focus the image when viewing at the higher magnifications.

Detailed explanation-2: -Condenser Lens-This lens system is located immediately under the stage and focuses the light on the specimen.

Detailed explanation-3: -Focus (coarse), The coarse focus knob is used to bring the specimen into approximate or near focus. Focus (fine), Use the fine focus knob to sharpen the focus quality of the image after it has been brought into focus with the coarse focus knob.

Detailed explanation-4: -Coarse Focus: This is the rough focus knob on the microscope. This knob is used to move the objective lenses toward or away from the specimen (see also fine focus).

Detailed explanation-5: -The coarse focus adjustment on a compound light microscope should only be used with the 4x objective lens. When the 10x or higher objective lenses are used, the fine adjustment focus should be used in order to avoid damaging the lenses and the specimens on the slide as these are in very close proximity to each other.