Work function

[rkang00]

In the lecture, there's a constant reference to 'work function'. What is that, is that the threshold energy with a circle-with-a-line-through-it as a symbol?

[A De Castro 14B 2H]

Hi, there are slight differences between the definitions of "work function" and "threshold energy." You can refer to this viewtopic.php?t=15646 for explanations.

[Phil Timoteo 1K]

In class Professor Lavelle referred to work function as the threshold energy, or the energy required to emit an electron.

[janessadai 1F]

I think they are interchangeable when calculating with the equation even though they have slight differences. (work function is the energy that needs to be put in, while threshold energy is the frequency required to eject an electron)

[Emilee Hosking 1D]

What is the equation for the work function and the phi symbol? Is the phi a constant?

[Meghanhe1l]

Energy of photon + Energy to remove election = Kinetic energy of ejected election
hv-(circle with a slash, which is the work function or threshold energy) = 0.5mv^2

[cristinapadilla_1E]

Work function, also known threshold energy, is the minimum energy required to release an electron.

[Athena L 1B]

The work function also depends on the metal being tested - different metals have different work functions, or minimum amount of energy needed to remove an electron from the surface.