Spin is a conserved quantity carried by elementary particles, and thus by composite particles (hadrons) and atomic nuclei. Spin is one of two types of angular momentum in quantum mechanics, the other being orbital angular momentum. The orbital angular momentum operator is the quantum-mechanical counterpart to the classical angular momentum of orbital revolution and appears when there is periodic structure to its wavefunction as the angle varies. For photons, spin is the quantum-mechanical counterpart of the polarization of light; for electrons, the spin has no classical counterpart. The existence of electron spin angular momentum is inferred from experiments, such as the Stern–Gerlach experiment, in which silver atoms were observed to possess two possible discrete angular momenta despite having no orbital angular momentum. The existence of the electron spin can also be inferred theoretically from the spin–statistics theorem and from the Pauli exclusion principle—and vice versa, given the particular spin of the electron, one may derive the Pauli exclusion principle. Spin is described mathematically as a vector for some particles such as photons, and as spinors and bispinors for other particles such as electrons. Spinors and bispinors behave similarly to vectors: they have definite magnitudes and change under rotations; however, they use an unconventional "direction". All elementary particles of a given kind have the same magnitude of spin angular momentum, though its direction may change. These are indicated by assigning the particle a spin quantum number. The SI unit of spin is the same as classical angular momentum (i.e., N·m·s, J·s, or kg·m2·s−1). In practice, spin is given as a dimensionless spin quantum number by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum, although this is not the full computation of this value. Very often, the "spin quantum number" is simply called "spin". The fact that it is a quantum number is implicit. (Wikipedia).
Spin in quantum mechanics is an incredibly interesting property. However, it can be very difficult to understand what exactly it is. In this video, we dispel some misconceptions about spin as well as answer some of the more frequently asked questions about spin. #physics #quantum
From playlist Quantum Mechanics
What is the "spin" of a particle?
“Spin” is one of the core building blocks of quantum reality, but it is a subtle concept to grasp. Here’s Brian Greene with one way to think about it. Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Fac
From playlist Science Unplugged: Quantum Mechanics
You've Heard of SPIN - But How Is it Encoded in the Math of Quantum Physics? Parth G
The concept of Spin is hard, but the mathematics is actually quite simple! In this video I wanted to take a look at how we build up our mathematical representation (or at least one of them) of quantum mechanical spin. To do this, we'll start by looking at the spin of an electron, and unde
From playlist Quantum Physics by Parth G
What is Spin? | Quantum Mechanics
Follow up video: https://youtu.be/z_6B2M12H9w Research assignment: Teach me about spin. Below there are suggested questions, recommended sources and my social media accounts: QUESTIONS: Questions that require less research: 1. This is our first real example of quantization, the phenomen
From playlist Some Quantum Mechanics
Things we know about spin in quantum mechanics
I discuss a few experimental facts about some weird thing called Spin, especially the Stern Gerlach experiment.
From playlist Old Quantum Mechanics Videos
Quantum Spin - Visualizing the physics and mathematics
Quantum spin states explained with 3D animations. My Patreon page is at https://www.patreon.com/EugeneK
From playlist Physics
How did the concept of particles having "spin" arise from experimental studies?
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From playlist Science Unplugged: Quantum Mechanics
Spin of an Electron: Why "Spin Up" and "Spin Down"? | Quantum Physics for Beginners
What is Spin? And what is the Spin of an Electron? Hi guys, I'm back with a new video, all thanks to a brilliant comment on my previous one :) In this video, I wanted to discuss what the spin of an electron is, as well as why we call the two possible results of a spin measurement are call
From playlist Quantum Physics by Parth G
We briefly discuss the spin of particles in the z-direction in the language of Dirac Notation, and introduce the Stern-Gerlach experiment and its role in making measurements of spin.
From playlist Quantum Mechanics Uploads
Quantum entanglement in macroscopic matter (Lecture 1)
T Senthil (Department of Physics, Massachusetts Institute of Technology) URL: https://www.icts.res.in/lecture/2/details/1642/ 13 Jan 2015, 05:00 PM Physics Auditorium, IISc campus, Bangalore Description: A powerful organizing principle to describe and distinguish phases of macroscopic m
From playlist Chandrasekhar Lectures
Understanding spin-1 kagome antiferromagnet through Hida model by Brijesh Kumar
Program The 2nd Asia Pacific Workshop on Quantum Magnetism ORGANIZERS: Subhro Bhattacharjee, Gang Chen, Zenji Hiroi, Ying-Jer Kao, SungBin Lee, Arnab Sen and Nic Shannon DATE: 29 November 2018 to 07 December 2018 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Frustrated quantum magne
From playlist The 2nd Asia Pacific Workshop on Quantum Magnetism
Quantum entanglement in macroscopic matter (Lecture 2)
T Senthil (Department of Physics, Massachusetts Institute of Technology) URL: https://www.icts.res.in/lecture/2/details/1642/ 14 Jan 2015, 05:00 PM Physics Auditorium, IISc campus, Bangalore Description: A powerful organizing principle to describe and distinguish phases of macroscopic m
From playlist Chandrasekhar Lectures
Disorder in a classical spin liquid: topological spin glass by Arnab Sen
DISCUSSION MEETING NOVEL PHASES OF QUANTUM MATTER ORGANIZERS: Adhip Agarwala, Sumilan Banerjee, Subhro Bhattacharjee, Abhishodh Prakash and Smitha Vishveshwara DATE: 23 December 2019 to 02 January 2020 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Recent theoretical and experimental
From playlist Novel Phases of Quantum Matter 2019
Angular Momentum - Physics 101 / AP Physics 1 Review with Dianna Cowern
Lesson 15 (Angular Momentum) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need a review of AP Physics concepts before the exam? This course is for you! More fun exploration of water spinning angular momentum demo from S
From playlist Dianna's Intro Physics Class/ Physics 101/ AP Physics 1 Review with Physics Girl
Emergent Gauge Fields and Quantum Matter by G Baskaran
DISCUSSION MEETING : GEOMETRIC PHASES IN OPTICS AND TOPOLOGICAL MATTER ORGANIZERS : Subhro Bhattacharjee, Joseph Samuel and Supurna Sinha DATE : 21 January 2020 to 24 January 2020 VENUE : Madhava Lecture Hall, ICTS, Bangalore This is a joint ICTS-RRI Discussion Meeting on the geometric
From playlist Geometric Phases in Optics and Topological Matter 2020
Commensurability in quantum many-body systems (Lecture 1) by Masaki Oshikawa
SPEAKER: Masaki Oshikawa (University of Tokyo) DATE : Wed, 16 December 2019, Emmy Noether Seminar Room, ICTS Campus, BangaloreI SEMINAR: Abstract : In condensed matter physics, we are interested in macroscopic number of quantum-mechanical particles which are strongly interacting with ea
From playlist Seminar Series
More on superposition. General state of a photon and spin states
MIT 8.04 Quantum Physics I, Spring 2016 View the complete course: http://ocw.mit.edu/8-04S16 Instructor: Barton Zwiebach License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 8.04 Quantum Physics I, Spring 2016
Quantum Mechanics Concepts: 3 Electron Spin
Part 3 of a series: application of concepts to electron spin.
From playlist Quantum Mechanics
Long-Range Coupling of Spins with Microwave-Frequency Photons by Jason Petta
PROGRAM NON-HERMITIAN PHYSICS (ONLINE) ORGANIZERS: Manas Kulkarni (ICTS, India) and Bhabani Prasad Mandal (Banaras Hindu University, India) DATE: 22 March 2021 to 26 March 2021 VENUE: Online Non-Hermitian Systems / Open Quantum Systems are not only of fundamental interest in physics a
From playlist Non-Hermitian Physics (ONLINE)