What are the main parts,and it's functions of a metallurgical microscope?
Answers
Answer:
Arm: The arm connects the body tube to the base of the microscope.
Coarse adjustment: Brings the specimen into general focus.
Fine adjustment: Fine tunes the focus and increases the detail of the specimen.
Nosepiece: A rotating turret that houses the objective lenses.
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The Metallurgical Microscope consists essentially of an optical system and an illumination system. The optical system, includes the eyepiece lens, relay system and the objective lens. Typical applications are grain sizing, inclusion counts, layer thickness assessment and phase determination. Invented by a Dutch spectacle maker in the late 16th century, light microscopes use lenses and light to magnify images. Although a magnifying glass technically qualifies as a simple light microscope, today’s high-power—or compound— microscopes use two sets of lenses to give users a much higher level of magnification, along with greater clarity. The first set of lenses are the oculars, or eyepieces, that the viewer looks into; the second set of lenses are the objectives, the lenses closest to the object (specimen). Before purchasing or using a microscope, it is important to know the functions of each part.
Eyepieces: The eyepieces are the lenses at the top that the viewer looks through; they are usually 10X or 15X. To get the total magnification level, multiply the magnification of the objective used (ex: 10X eyepiece * 40X objective = 400X total magnification).
Tube: Where the eyepieces are dropped in. Also, they connect the eyepieces to the objective lenses.
Base: The bottom of the microscope—what the microscope stands on.
Arm: Structural element that connects the head of the microscope to the base.
Stage: The flat platform that supports the slides. Stage clips hold the slides in place. If your microscope has a mechanical stage, the slide is controlled by turning two knobs instead of having to move it manually. One knob moves the slide left and right, the other moves it forward and backward.
Illuminator: A steady light source (110 volts in the US) that shines up through the slide. Mirrors are sometimes used in lieu of a built-in light. If your microscope has a mirror, it is used to reflect light from an external light source up through the bottom of the stage.
Nosepiece: This circular structure is where the different objective lenses are screwed in. To change the magnification power, simply rotate the turret.
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