GENERAL HISTOLOGY

Detailed explanation-1: -Electron Microscopes (EMs) function like their optical counterparts except that they use a focused beam of electrons instead of photons to “image” the specimen and gain information as to its structure and composition.

Detailed explanation-2: -The SEM is an instrument that produces a largely magnified image by using electrons instead of light to form an image. A beam of electrons is produced at the top of the microscope by an electron gun.

Detailed explanation-3: -The transmission electron microscope is used to view thin specimens (tissue sections, molecules, etc) through which electrons can pass generating a projection image. The TEM is analogous in many ways to the conventional (compound) light microscope.

Detailed explanation-4: -Scanning electron microscope (SEM) is one of the most widely used instrumental methods for the examination and analysis of micro-and nanoparticle imaging characterization of solid objects. One of the reasons that SEM is preferred for particle size analysis is due to its resolution of 10 nm, that is, 100 Å.

Detailed explanation-5: -There are several different types of electron microscopes, including the transmission electron microscope (TEM), scanning electron microscope (SEM), and reflection electron microscope (REM.)