I'm going to do a quick experiment with charging
by contact using kind of the standard setup
with the Electrostatics Kit and the Charge Sensor.
And one thing I would like to do is to make sure
that my charge separators don't have
any excess charge on them already.
And the Electrostatics Kit comes with a cotton cloth.
It's just a washcloth, and I've actually dampened it
so that I can touch those to it before I start
to make sure that there's no excess charge on there.
And then the other thing I would like to do
is to make sure that there's no charge
already built up on any of this,
and so I'm going to press
the grounding button there to make sure
there's no charge already on the system.
So now we need to set up for this experiment.
And I'm going to use the standard default settings
for the Charge Sensor, 10 samples/second, 60 seconds.
But I want to enable data marking.
And data marking's going to allow me to mark
different points on the graph, so I'm going to go
to the meter and then go to Advanced, pulldown,
Enable Data Marking, say OK.
And now I'm ready to begin collection.
So I will hit Collect to start with,
and now I will rub the charge separators together.
I will take the white one and lay it down in there.
And I'm going to mark a point as it goes in.
And then mark it and remove it.
And now I'm going to rub it on the edge of the pail.
And now stop rubbing.
And I'll hit stop.
So we have some interesting data here.
And so we see that when I first put the white disk
inside the pail, we end up with a charge on there.
When I pull it back out, nothing happens.
But when I put it in and actually touch the pail,
then when I remove it at this point,
we leave excess charge on the pail there.
Now what I could do is go in and mark
these different data marks.
I will mark this as Insert.
Done.
Then the second one was where I removed it.
And the third one, I will say Touch.
And then "remove" again.
So all I'm doing is marking the different points
along the graph to be able to do that.
So now I've got the different markings there.
So in this experiment, we've used
the Vernier Charge Sensor along with the Electrostatics Kit
to study charge by contact or conduction.