00:01
In this problem, we're going to talk about confinement.
00:04
And in particular, confinement refers to quarks.
00:10
So different quarks.
00:14
It could be in a baryon, like a proton or a neutron, or you could have a quark and an anti -quark together in a meson.
00:29
But essentially, what happens is that we only ever see quarks in these specific configurations, where they're bound together.
00:36
You've never seen experimentally just a single cork on its own.
00:41
The reason for this is that the corks interact through the strong interaction.
00:47
And so when two corks are close together like this, the strong interaction between them.
00:59
I'll just label that s, a strong interaction, is actually pretty small.
01:04
But as you separate them, it becomes harder to pull them apart...