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Stage is where the specimen to be viewed is placed. A mechanical stage is used when working at higher magnifications where delicate movements of the specimen slide are required.

Eyepiece or Ocular is what you look through at the top of the microscope. Typically, standard eyepieces have a magnifying power of 10x. Optional eyepieces of varying powers are available, typically from 5x-30x.

Illuminator is the light source for a microscope, typically located in the base of the microscope. Most light microscopes use low voltage, halogen bulbs with continuous variable lighting control located within the base.

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Stage Clips are used when there is no mechanical stage. The viewer is required to move the slide manually to view different sections of the specimen.

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Iris Diaphragm controls the amount of light reaching the specimen. It is located above the condenser and below the stage. Most high quality microscopes include an Abbe condenser with an iris diaphragm. Combined, they control both the focus and quantity of light applied to the specimen.

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Objective Lenses are the primary optical lenses on a microscope. They range from 4x-100x and typically, include, three, four or five on lens on most microscopes. Objectives can be forward or rear-facing.

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A chief characteristic of a Fresnel is its ability to focus: its lens is positioned in front of the light bulb and can be pivoted to narrow or expand the beam of light that the fixture emits. While traditional Fresnels tend to be extremely hot, more recent developments have designed models with cooler operating temperatures.

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Nosepiece houses the objectives. The objectives are exposed and are mounted on a rotating turret so that different objectives can be conveniently selected. Standard objectives include 4x, 10x, 40x and 100x although different power objectives are available.

Eyepiece Tube holds the eyepieces in place above the objective lens. Binocular microscope heads typically incorporate a diopter adjustment ring that allows for the possible inconsistencies of our eyesight in one or both eyes. The monocular (single eye usage) microscope does not need a diopter. Binocular microscopes also swivel (Interpupillary Adjustment) to allow for different distances between the eyes of different individuals.

The Fresnel light has a fascinating backstory that predates the invention of the incandescent lamp. French engineer Augustin-Jean Fresnel originally developed what became known as the Fresnel Lamp as a solution for lighthouses that needed to magnify and focus their light sources. Modern Fresnel lights put this lens design to work in myriad ways to achieve powerful, versatile illumination.

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A high power or compound microscope achieves higher levels of magnification than a stereo or low power microscope. It is used to view smaller specimens such as cell structures which cannot be seen at lower levels of magnification. Essentially, a compound microscope consists of structural and optical components. However, within these two basic systems, there are some essential components that every microscopist should know and understand. These key microscope parts are illustrated and explained below.

Coarse and Fine Focus knobs are used to focus the microscope. Increasingly, they are coaxial knobs - that is to say they are built on the same axis with the fine focus knob on the outside. Coaxial focus knobs are more convenient since the viewer does not have to grope for a different knob.

Fresnels deliver rich, accurate color rendition, natural skin tones, and optimal brightness. All these benefits make Fresnel lighting ideal for professional entertainment applications, such as stages (including theaters, DJ performances, and more), or commercial photography studios. Their flicker-free use and virtually silent operation make them the perfect choice for on-camera projects such as TV, film, or broadcast studios.

Condenser is used to collect and focus the light from the illuminator on to the specimen. It is located under the stage often in conjunction with an iris diaphragm.