## Work Function

$c=\lambda v$

Anokhi Patel 2B
Posts: 76
Joined: Fri Aug 09, 2019 12:17 am

### Work Function

Professor Lavelle always referred to the formulas as work functions, what exactly does that mean?

Thanks.

Junwei Sun 4I
Posts: 125
Joined: Wed Oct 02, 2019 12:16 am

### Re: Work Function

Work function just means the minimum amount of energy required to remove an electron from the surface of a metal. You can also look at it as the threshold energy. Once the energy of the photon exceeds the threshold energy the electron gets removed from the metal surface.

Sydney Myers 4I
Posts: 100
Joined: Fri Aug 09, 2019 12:17 am

### Re: Work Function

Another thing to note is that there is actually no formula for the work function that we learned. It's a constant that is usually given in a problem (if not, it can be found if you have an electron's excess energy after being removed and the energy that the photon had when it hit the electron)

AKatukota
Posts: 100
Joined: Thu Jul 25, 2019 12:18 am

### Re: Work Function

Work function is basically the energy required to remove an electron from the metal surface. If the energy of the photon is not greater than or equal to the energy to remove an electron (work function), then no electrons will be emitted.