Electron Emission

The video tutorial explains the concept of free electrons in metals and their role in conductivity. It introduces the work function, the minimum energy required for an electron to escape a metal, and how it is measured in electron volts. The tutorial also covers three processes of electron emission: thermionic emission, field emission, and photoelectric emission, detailing how electrons gain energy to leave the metal surface in each process.

What is thermionic emission and how does it occur?

How does photoelectric emission differ from field emission?