Quantum Chromodynamics (QCD)

The video tutorial explains quantum electrodynamics and its role in describing electromagnetic forces through quanta. It introduces quarks, their types, and their role in forming protons and neutrons. The concept of quantum chromodynamics is discussed, highlighting the color charge of quarks. The strong nuclear force, mediated by gluons, is explained, along with the complexity of quantum field theories. The tutorial concludes with a note on the organization of particles in a model.

What does quantum electrodynamics (QED) explain?

• The weak nuclear force

• The strong nuclear force

• The electromagnetic force

• The gravitational force

What are protons and neutrons made of?

• Photons

• Quarks

• Atoms

• Electrons

What is the charge of an up quark?

• 2/3 positive

• 1/3 positive

• 1/3 negative

• 2/3 negative

Which force is mediated by gluons?

• Gravitational force

• Weak nuclear force

• Electromagnetic force

• Strong nuclear force

How many types of gluons are involved in the strong nuclear force?

• One

• Three

• Five

• Eight