Scanning electron microscope (SEM)

Electron microscopes are very powerful tools for visualising biological samples. They enable scientists to view cells, tissues and small organisms...

Since Antonie van Leeuwenhoek first saw mysterious ‘animalcules’ (bacteria) through his simple glass lens in the late 1600s, scientists have...

Electron microscopes were developed in the 1930s to enable us to look more closely at objects than is possible with...