I’m Cynthia Keppel
I’m the Hall A leader here at Jefferson Lab.
And in Hall A, we perform electron scattering experiments. 
And what that is, is we’re trying to understand 
The structure deep inside the nucleus.
And so we kind of need to see in there.
And so how do we see in there?
Well, how do you see anything?
The way you’re looking at the table or whatever’s in front of you 
Are photons - little particles of light.
They’re bouncing down, bouncing off that table 
And bouncing into your eyeball.
And your eyes are a really sensitive detector. 
And tells you things like the wavelength
Which you translate into color
And all sorts of information about that table.
We do the same thing, but we need to see very tiny objects 
So we use very high-energy electrons 
Bounce them off the nucleus 
And bounce them into large detector systems.
Just like what we have here in Hall A
And the other halls at Jefferson Lab
Where we can transfer the information that we learn 
From detecting those electrons into properties of the nucleus. 
