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The humble proton may seem simple enough, and they’re certainly common. People are made of cells, cells are made of molecules, molecules are made of atoms, atoms are made of electrons, protons, and neutrons. And protons are each made of three up or down quarks. Simple stuff, right? All except for that last part. Protons are actually made of many, many quarks that happen to look like three only when we look at them in a particular way. And even then, sometimes they’re made of 5 quarks – including the charm quark.
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Hosted by Matt O’Dowd
Written by Fernando Franco Félix & Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini, Adriano Leal & Stephanie Faria
Directed by Andrew Kornhaber
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Assistant Director of Programming for PBS: John Campbell
Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
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End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka
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00:00 Introduction
01:24 The Physics of Scattering
03:06 Using Electrons To Study Protons
04:11 3 Quark Proton Model
05:28 The Quark Sea
06:56 Charm Quark Evidence
08:04 Intrinsic Vs. Extrinsic Particle
09:51 The Uncertainty of Proton Experiments
11:09 QCD & Heisenberg Uncertainty
12:33 Proving the Theory of Intrinsic Charm
13:41 Testing Intrinsic Charm with AI