Write a note on electron microscope.

Explanation

In electron microscope electron beam is used instead of visible light.
Electron beam can be focussed by properly designed electric and magnetic fields.
Resolution of such an electron microscope is limited by fact that electron can behave as wave. Wavelength of electron is less than one angstrom `(1Å)`
Electron microscope has resolution of `0.6 Å` Electron microscope is used to resolve atom and molecules.