GENERAL HISTOLOGY

Detailed explanation-1: -The objective lenses of compound microscopes are parfocal.

Detailed explanation-2: -Revolving Nosepiece or Turret: This is the part of the microscope that holds two or more objective lenses and can be rotated to easily change power. Objective Lenses: Usually you will find 3 or 4 objective lenses on a microscope. They almost always consist of 4x, 10x, 40x and 100x powers.

Detailed explanation-3: -According to the degrees of the aberration corrections, objective lenses are generally classified into five basic types: Achromat, Plan Achromat, Plan Fluorite (Plan Semi-Apochromat), Plan Apochromat, and Super Apochromat.

Detailed explanation-4: -Objective lenses come in various magnification powers, with the most common being 4x, 10x, 40x, and 100x, also known as scanning, low power, high power, and (typically) oil immersion objectives, respectively.

Detailed explanation-5: -Compound microscopes use three lenses are used to accomplish the viewing, the eyepiece lens, condenser lens and objective lens.