I’m Dr. David Lawrence.
I’m a physicist at Jefferson Lab.
And I’m going to define what a baryon is.
A baryon is a small sub-atomic particle 
That's made up of three quarks.
It’s got three quarks that have to be different colors
Red green or blue
But these aren’t the colors that you’re used to 
from your Crayola box.
It’s just a way of describing the strong force 
that holds these things together.  
The best example of baryon is proton or neutron.
We also have other baryons that 
are heavier or excited states of these things
And they exist all around us 
But only the protons and neutrons are very stable to live for very long.
