Particles are the Lego bricks of nature. Their interaction with each other constructs all matter that is present in our universe. Particle Physics studies how particles interact with each other .
In this lesson, divided into separate 3 videos, you will learn about fundamental particles, about the quantum numbers associated with each of them, and how to predict and write particle physics reactions .
In this video (PART 3/3), you will learn how to predict if a particle physics reaction can occur (or not), by applying conservation laws on quantum numbers.
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Access to the table of particles:
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This lecture is structured in three sections that follow a general introduction:
INTRODUCTION: [ Ссылка ]
SECTION 1: The Standard Model of Particle Physics
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SECTION 2: Quantum Numbers
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PART 1 is a reminder of the standard model of particle physics. It presents the elementary particles (fermions, like quarks and leptons, and bosons, like the photon or the gluon). It shows how combining quarks lead to composite particles (hadrons like the proton, the neutron, the pion and the kaon). Antimatter is also discussed in this section.
This first section is a brief overview, so if you wish to view a lesson on the standard model of particles with more details and at a slower pace head on to these two videos:
Elementary particles: [ Ссылка ]
Composite particles: [ Ссылка ]
PART 2 is a detailed look at some of the properties of these particles, which are expressed as quantum numbers (Baryon number, Electric Charge, Lepton number, Strangeness).
PART 3: In nature there are some symmetries that need to be respected in all interactions. These lead to the existence of conservation laws (via Noether's theorem). Quantum numbers need to follow these conservation laws. This idea is central. After viewing this section, you will be able to determine if a particle physics reaction is possible or not. For that, we will work on many examples of reactions including Beta decay, muon decay into a positron, and more.
This video has a lot of information, it’s a real course in itself. I hope you enjoy it and that it helps in giving you a clearer idea about the reactions between particles.
If you are a high school teacher, feel free to use anything you see fit in this video for your own students .
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This video is produced and presented by Edouard Reny, Ph.D. in solid state chemistry and private tutor in Physics.
For access to great resources that will help you with your studies of high school Physics, visit and subscribe to the "Physics Made Easy" website:
[ Ссылка ]
Edouard provides one-on-one private tuition in Physics (face to face or by Skype). If you wish to contact him, visit his website: [ Ссылка ]
