Electron microscope is a device for forming greatly magnified images of objects by means of electrons. Electron microscope serves primary two purposes: i) the visual examination of structures too fine to be resolved with ordinary, or light microscopes, and ii) the study of surfaces that emit electrons.
Electron Microscopes Shoot Small Particles Electron microscopes shoot beams of electrons at their subject, which is held in an airless, vacuum-sealed tube. Scientist often use these microscopes to study cells. In the case of transmission electron microscopes, the electrons shoot through a thin and dehydrated subject, hitting a film placed ...
A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the sample's surface topography and composition.
Some stereo microscopes can deliver a useful magnification up to 100×, comparable to a 10× objective and 10× eyepiece in a normal compound microscope, although the magnification is often much lower. This is around one tenth the useful resolution of a normal compound optical microscope.
Transmission electron microscopy is a major analytical method in the physical, chemical and biological sciences. TEMs find application in cancer research, virology, and materials science as well as pollution, nanotechnology and semiconductor research.