Electron microscopes are powerful tools that use beams of electrons to create highly detailed images of small objects, such as cells and materials. Unlike light microscopes, which use visible light, electron microscopes can achieve much higher resolutions, allowing scientists to observe structures at the atomic level. There are different types of electron microscopes, including Transmission Electron Microscopes (TEM) and Scanning Electron Microscopes (SEM). TEMs transmit electrons through a specimen to form an image, while SEMs scan the surface of a sample to produce three-dimensional images. These instruments are essential in fields like materials science, biology, and nanotechnology.