What are electron microscope?

There are several different types, but they all use beams of electrons, rather than beams of light, to visualize specimens, and the image is then magnified. The benefit is that this allows us to see objects that are much smaller than what we can see with traditional microscopes. The reason for this has to do with the wave-like nature of electrons. Electrons are similar to light waves (photons), but they have a much shorter wavelength than visible light, allowing us to capture images of very small objects. The Wikipedia article on electron microscopes gives a lot more detail and describes several different types of EM: a href="http://en.wikipedia.org/wiki/Electron_microscope" rel="nofollow"http://en.wikipedia.org/wiki/Electron_mi…/a