What is Microscope and how it works ?

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Light from a mirror is reflected up through the specimen, or object to be viewed, into the powerful objective lens, which produces the first magnification.

The image produced by the objective lens is then magnified again by the eyepiece lens, which acts as a simple magnifying glass.

Before purchasing or using a microscope, it is important to know the functions of each part. Microscope Parts.

Eyepiece Lens: the lens at the top of the microscope that you look through.

The eyepiece lens (the one closest to your eye) magnifies the image from the objective lens, rather like a magnifying glass. On some microscopes, you can move the eyepiece up and down by turning a wheel. This gives you fine control or "fine tuning" of the focus. You look down on a magnified image of the object.

They eyepiece is usually 10x or 15x power. Tube: Connects the eyepiece to the objective lenses.

Microscopes used in homes, schools, and professional laboratories are actually compound microscopes and use at least two lenses to produce a magnified image.

There's a lens above the object (called the objective lens) and another lens near your eye (called the eyepiece or ocular lens).

Light microscopes use visible light to expose microbes. Because electron microscopy requires a vacuum to detect samples, it is at somewhat of a disadvantage; light microscopes are portable and affordable, and allow researchers to observe living organisms

But light microscopes also have their own disadvantages.

Basic Structure and Principle of Microscopes. A general biological microscope mainly consists of an objective lens, ocular lens, lens tube, stage, and reflector.

An object placed on the stage is magnified through the objective lens. When the target is focused, a magnified image can be observed through the ocular lens.

An object placed on the stage is magnified through the objective lens. When the target is focused, a magnified image can be observed through the ocular lens.

The simplest optical microscope is the magnifying glass and is good to about ten times (10X) magnification.

The compound microscope has two systems of lenses for greater magnification, 1) the ocular, or eyepiece lens that one looks into and 2) the objective lens, or the lens closest to the object.

Microscopes have opened up a whole new dimension in science, By using Microscopes scientists were able to discover the existence of the microorganisms, study the structure of cells, and see the smallest parts of plants, animals, and fungi.

Simple light microscopes use a single lens to magnify an object and cannot reach high magnification.

Compound light microscopes use two sets of lenses - an objective lens and an eyepiece - to produce images. Monocular microscopes have one eyepiece, while binocular microscopes have two eyepieces and reduce eye strain.

A simple microscope has one lens and is essentially a loupe or magnifying glass with a relatively high magnification.found in schools, hospitals, and research centers is a compound microscope which has a series of lenses to collect and focus the light transmitted through the specimen.

More specifically, the wavelength of the light waves that illuminate the specimen limits the resolution.

The wavelength of visible light ranges from about 400 to 700 nanometers.

Although larger and more complicated, the multiple lenses of the compound microscope increase magnification and resolution while reducing chromatic aberration.More sophisticated and specialized microscopes, such as an electron microscope, use the same scientific principles as their conventional counterparts even though they operate in a different manner.

The best compound microscopes cannot resolve parts of a specimen that are closer together than about 200 nanometers.

While a light microscope uses light to illuminate specimens and glass lenses to magnify images, an electron microscope uses a beam of electrons to illuminate specimens and magnetic lenses to magnify images.