Work Function


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alicechien_4F
Posts: 104
Joined: Sat Jul 20, 2019 12:15 am

Work Function

Postby alicechien_4F » Tue Oct 08, 2019 9:33 pm

In Lavelle's lecture, I was confused on what the work function is. Can someone help clarify what it is and how to solve for it?

Brooke Yasuda 2J
Posts: 102
Joined: Sat Jul 20, 2019 12:17 am

Re: Work Function

Postby Brooke Yasuda 2J » Tue Oct 08, 2019 9:38 pm

The work function is the minimum amount of energy a photon needs to have in order to eject an electron. In other words, it is the threshold energy. You can solve this by the equation E(photon) - work function = E(excess/KE).

Kellylin_4D
Posts: 66
Joined: Sat Aug 24, 2019 12:17 am

Re: Work Function

Postby Kellylin_4D » Tue Oct 08, 2019 9:40 pm

The work function is the amount of energy needed to remove an electron from a metal. Different metals have different work functions. It can also be denoted as threshold energy, or "energy removed e-." It is in the function, E(photon)-work function=Ek(e-)


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