My name is Elena Long.
I’m a graduate student at Kent State University doing research at Jefferson Lab.
Quantum Chromodynamics is a big word 
That we use to describe how things interact in the nuclear level.
When we talk about this, 
We’re talking about the force that holds the nucleus together.
One of the other forces you may have heard about is electromagnetism.
In electromagnetism, we have two charges.
We have positive ones and negative ones.
What’s different between that and quantum chromo-dynamics 
Is that in quantum chromo-dynamics, 
or QCD, 
We have 3 different charges.
We describe them by color, 
Because it’s analogous to the three primary colors: 
Red, blue and green.
We use these color terms 
To be able to describe the interactions 
That are happening inside of nuclei.
