Work function. Was: Re: LSF method vs. averaging

[Bernard Cleyet <anngeorg@PACBELL.NET>]

Just a reminder.  The work function found by the intercept is that of
the Anode, not the Cathode.

bc, a lover of counter intuition.

p.s. I've found finding the terminal (as in end point) EMF as a function
of the incident photons' energy, instead of the variable stopping
potential method, results in a much better result; besides it's easier!

James Frysinger wrote:

> I like these comments posted by John and I appreciate the mini-review of
> resources. Perhaps I'm reading too much into the original question, but this
> has launched a batch file in my head that outputs a homily I frequently
> deliver to my lab students.
>
> There is another aspect of this situation that I think has not yet been
> addressed and it is one that comes up frequently in my Introductory physics
> labs.
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> And of course, it's often the case when the intercept, on one axis or the
> other, tells us something that would be neat to know. If I had a nickel for
> every Photoelectric Effect lab report that discussed the students' personally
> determined value for Plank's constant and totally disregarded the work
> function value that fell into their laps....
>
> Jim
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