00:01
Going to be doing is we're going to draw a picture of a photo tube in the electric circuit that you need to build in order to study the photoelectric effect.
00:09
So first thing we've got to do is we've got to have our cathode and our anode.
00:14
So cathode and anode.
00:19
These are going to be attached like a circuit.
00:23
We also need to have an am meter in series to tell us what the current is.
00:28
This is going to be attached to a variable emf source or voltage source.
00:34
That's what they called it in your previous physics classes.
00:40
And this right here is going to be attached to the cathode.
00:50
And right here, this is variable emf source.
00:57
And this is our ammeter.
01:01
We're missing one very, very important thing, which is our light source and the tube that actually transmits the light onto our cathode.
01:11
So i'm just going to draw this in red right here, kind of isolates our cathode and anode, and it's going to have a space for the photo electrons to come and then hit our cathode.
01:28
And if there's enough energy in our light source, that will cause electrons to pop off our can't, pathode and go towards our anode...