GENERAL HISTOLOGY

Detailed explanation-1: -Revolving Nosepiece or Turret: This is the part that holds two or more objective lenses and can be rotated to easily change power.

Detailed explanation-2: -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-3: -Single lens element: A single lens on its own. Lens spacers: These are spacers that sit between the lenses. Internal lens housing: As the name implies, this structure houses the internal lens system. Objective rear aperture: A hole or opening where light enters the objective.

Detailed explanation-4: -Essentially, objective lenses can be categorized in to three main categories based on their magnification power. These include: low magnification objectives (5x and 10x) intermediate magnification objectives (20x and 50x) and high magnification objectives (100x).