How do electron microscopes work?

Technique: Electron microscopy Transmission and scanning electron microscopy The hard work of this video was done when we covered light microscopy. This is because electron microscopes essentially work the same as light microscopes but instead of glass lenses warping light, the beams of electrons are warped by electromagnets. The key to understanding electron microscopy is understanding the problem they solve -  the wave length of visible light is much bigger than some of the structures we want to be able to see. In this video I explain why this is a problem and how the electron microscope overcomes this issue. Learning objectives  Explain why the wave length of light limits the ability of light microscopes to visualize small structures like viruses Explain why we can't simply use smaller wave lengths of the electromagnetic spectrum Describe the approximate size relationship between viruses and light wavelengths Explain why electrons are a good visualization tool alternative to the electromagnetic spectrum (like light) Describe how transmission and scanning electron microscopes work