In solid-state physics, the nearly free electron model (or NFE model) or quasi-free electron model is a quantum mechanical model of physical properties of electrons that can move almost freely through the crystal lattice of a solid. The model is closely related to the more conceptual empty lattice approximation. The model enables understanding and calculation of the electronic band structures, especially of metals. This model is an immediate improvement of the free electron model, in which the metal was considered as a non-interacting electron gas and the ions were neglected completely. (Wikipedia).
In this video we review a crude but highly successful theory of nearly free electrons in a metal: The Drude model. Based on the Drude model we arrive at the equation of motion for electrons in an external electric and/or magnetic field. #CondensedMatter 00:00 Introduction 00:27 Historic
From playlist Condensed Matter, Solid State Physics
Quantum Physics: Early Models of the Atom (and why they feel SO right... but aren't)
The Rutherford Planetary and Bohr models of the atom have certain very satisfying qualities to them. It's just a shame they're incorrect... Hey everyone, I'm back with another fun physics video. This time, I wanted to shed some light on a couple of models of the atom that existed around t
From playlist Quantum Physics by Parth G
Introduction to Solid State Physics, Lecture 11: Band Structure of Electrons in Solids
Upper-level undergraduate course taught at the University of Pittsburgh in the Fall 2015 semester by Sergey Frolov. The course is based on Steven Simon's "Oxford Solid State Basics" textbook. Lectures recorded using Panopto, to see them in Panopto viewer follow this link: https://pitt.host
From playlist Introduction to Solid State Physics
The Atom A3 The Bohr Model of the Hydrogen Atom
The Bohr model of the atom.
From playlist Physics - The Atom
Quantum Mechanics 6a - Hydrogen I
The application of Schrödinger's equation to the hydrogen atom leads to far more than an explanation of the atom's spectrum. Note that the orbital visualizations are of "real orbitals." See https://en.wikipedia.org/wiki/Atomic_orbital#Real_orbitals and https://en.wikipedia.org/wiki/Atomi
From playlist Quantum Mechanics
Watch more videos on http://www.brightstorm.com/science/chemistry SUBSCRIBE FOR All OUR VIDEOS! https://www.youtube.com/subscription_center?add_user=brightstorm2 VISIT BRIGHTSTORM.com FOR TONS OF VIDEO TUTORIALS AND OTHER FEATURES! http://www.brightstorm.com/ LET'S CONNECT! Facebook ► h
From playlist Chemistry
Watch more videos on http://www.brightstorm.com/science/chemistry SUBSCRIBE FOR All OUR VIDEOS! https://www.youtube.com/subscription_center?add_user=brightstorm2 VISIT BRIGHTSTORM.com FOR TONS OF VIDEO TUTORIALS AND OTHER FEATURES! http://www.brightstorm.com/ LET'S CONNECT! Facebook ► h
From playlist Chemistry
Physics - Ch 66 Ch 4 Quantum Mechanics: Schrodinger Eqn (17 of 92) How to Use Schrod. Eqn: 2
Visit http://ilectureonline.com for more math and science lectures! In this video I will show how to use the Schrodinger's equation, part 2/2. Next video in this series can be seen at: https://youtu.be/kO9JZgVXqyU
From playlist PHYSICS 66.1 QUANTUM MECHANICS - SCHRODINGER EQUATION
Solid State Physics in a Nutshell: Topic 8-1: Free Electron Model
We begin this video by approximating our system as one electron in an infinite square well. We then develop a dispersion relation for the electron. We continue by looking at both fixed and periodic boundary conditions to develop a solution for the wave function.
From playlist CSM: Solid State Physics in a Nutshell | CosmoLearning.org Physics
Flat bands in honeycomb networks by Masaki Oshikawa
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
Lec 11 | MIT 3.320 Atomistic Computer Modeling of Materials
Finite Temperature: Review of Stat Mech and Thermodynamics Excitations in Materials and How to Sample Them View the complete course at: http://ocw.mit.edu/3-320S05 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 3.320 Atomistic Computer Modeling of Materials
Marco Bernardi - Quantum mechanical calculations of electron interactions in condensed matter
Recorded 12 April 2022. Marco Bernardi of the California Institute of Technology presents "Precise quantum mechanical calculations of electron interactions and dynamics in condensed matter" at IPAM's Model Reduction in Quantum Mechanics Workshop. Learn more online at: http://www.ipam.ucla.
From playlist 2022 Model Reduction in Quantum Mechanics Workshop
The Incorrect Assumptions of the Ideal Gas Model - and Why It Still Works!
What exactly IS an Ideal Gas? And why do physicists use this model to represent real gases? In this video we'll compare the assumptions made by the ideal gas model with the properties of real gases, as well as how we can improve the ideal gas law in certain scenarios. As with every model
From playlist Thermodynamics by Parth G
CMB & LSS: Overview of linear theory and Cosmological Background - David Spergel
Prospects in Theoretical Physics Particle Physics at the LHC and Beyond Topic: CMB & LSS: Overview of linear theory and Cosmological Background Speaker: David Spergel Date: July 24th, 2017
From playlist PiTP 2017
The case of the missing neutrinos (Lecture - 04) by G Srinivasan
Time: 10:00 AM Venue: Ramanujan Lecture Hall / Madhava Lecture Hall, ICTS Campus, Bangalore This summer course aims to give a broad perspective on gravity, astrophysics and cosmology and is suitable for advanced undergraduates and graduate students in physics and astronomy. Professor G
From playlist Summer Course 2017: A Journey Through The Universe
Student Video: Tight Binding Model
MIT RES.3-004 Visualizing Materials Science, Fall 2017 Speaker: Shixuan Shan View the complete course: https://ocw.mit.edu/RES-3-004F17 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP62EJXwSgoVRfh1tEiSc01bh This video briefly introduces the theoretical basics of the ti
From playlist MIT RES.3-004 Visualizing Materials Science, Fall 2017
The History of Atomic Chemistry: Crash Course Chemistry #37
How did we get here? Well, in terms of Atomic Chemistry, Hank takes us on a tour of the folks that were part of the long chain of other folks who helped us get to these deeper understandings of the world. From Leucippus to Heisenberg to you - yes, YOU - the story of Atomic Chemistry is all
From playlist Chemistry
Want a career that helps solve the world's biggest problems? Then head over to https://80000hours.org/parth Over the years, many scientists have been confident that physics is almost complete, and that humanity was just a small number of discoveries away from understanding everything in t
From playlist Quantum Physics by Parth G
The Atom A4 The Bohr Model of the Hydrogen Atom
The Bohr model of the atom.
From playlist Physics - The Atom