Arvin Ash

The STANDARD MODEL: A Theory of (almost) EVERYTHING Explained (2021x13)

Udgivelsesdato: Maj 01, 2021

Signup for your FREE trial to The Great Courses Plus here: http://ow.ly/Ri5Z30rFSmc Online Blackboard video: https://youtu.be/C0HSl7iuQB4 The holy grail of physics research is a theory of everything. But we already have a pretty good model for such a theory. It is the Standard model of particle physics. It describes all fundamental particles that we are aware of, and three of the 4 known fundamental forces, electromagnetism, strong, and weak interactions. It just doesn’t include gravity. The simple equation and chart actually represents very complex mathematical equations that can take years of graduate level study to fully understand. It was developed by hundreds of scientists over several decades. In this video, I explain the math intuitively. 0:00 - The best known theory 2:00 - The Standard Model explained 4:05 - What is a Lagrangian 5:01 - How forces interact 6:52 - How matter interacts with forces 9:32 - Higgs-boson interactions 11:25 - Higgs-matter interactions 13:23 - Summary Ordinary matter that we experience around us is really just made of 4 particles, the up and down quarks which make up the protons and neutrons in the nuclei of atoms, electrons which form a cloud around the nucleus, and a near massless particle - the electron neutrino which is created during the fusion process in stars like the sun. The other particles are rare and don’t typically exist in ordinary matter. The difference between quarks and leptons is that quarks interact with the strong nuclear force which binds the nuclei of atoms together, whereas leptons do not. The Bosons are the force carriers. The gluons carry the strong force which binds the nuclei of atoms. The W plus, W minus and Z boson carry the weak force which is responsible for some kinds of radiation. And the photons carry the electromagnetic force responsible for all electricity, magnetism and chemistry. Lastly, we have the Higgs boson which is important for giving mass to all fundamental particles