December 2, 2021

What is Electron Microscope? Its structures and functions of the organs?

How far the electron microscope, increase structures and functions of the organs?


Light microscopes are developed into an electron microscope revolutionized for better understanding of structure a shorter length. The resolving power is high that its detail can is up to in, objects can be magnified greatly without loss of clarity. An electron microscope can give a clear picture of an object that is magnified 500 times even 3D images( scanning electron microscope) This allow us to study the submicroscopic structure and provide a better understanding of cytology. Enable the detail of the surface to be seen. From the image, we can determine the size and shape of the object.

electron microscope

Give one difference in resolution and magnification in microscopy


Resolution is the ability to distinguish between two separate objects (Separate objects that are close together). It depends on the property of lenses, lens quality and wavelength of illumination. The shorter the wavelength, the better the resolution magnification is the number of time the image enlarged than the specimen is. It depends on the combination of lenses are used and the power of the lenses. The image is the increase of image but no details.

Electron microscopy (EM) is a technique used to obtain high-resolution images of biological and non-biological samples. It is used in biomedical research to study the detailed structure of tissues, cells, organelles, and complexes of large molecules. The high resolution of EM images is due to the use of electrons (very short wavelengths) as a source of lighting radiation. An electron microscope can be used with many auxiliary techniques (such as splitting, immunomodulating, negative staining) to answer specific questions. EM images provide basic information about cell function and the structural basis for cell diseases.

There are two main types of electron microscopes – EM (TEM) transport and EM (SEM) scans. Electron microscopy is used to monitor the thin samples (tissue sections, molecules, etc.) that electrons can pass through, thus producing an expected image. TEM is similar to conventional (compound) optical microscopes in many ways. TEM is especially used for intracellular imaging (thin slices), the structure of protein molecules (in contrast to mineral shades), molecular regulation of cellular structural viruses and capillaries (prepared with negative staining techniques), and protein molecules in the cell membrane arrangement (breaking freezing).

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