Molecular symmetry in chemistry describes the symmetry present in molecules and the classification of these molecules according to their symmetry. Molecular symmetry is a fundamental concept in chemistry, as it can be used to predict or explain many of a molecule's chemical properties, such as whether or not it has a dipole moment, as well as its allowed spectroscopic transitions. To do this it is necessary to use group theory. This involves classifying the states of the molecule using the irreducible representations from the character table of the symmetry group of the molecule. Symmetry is useful in the study of molecular orbitals, with applications to the Hückel method, to ligand field theory, and to the Woodward-Hoffmann rules. Many university level textbooks on physical chemistry, quantum chemistry, spectroscopy and inorganic chemistry discuss symmetry. Another framework on a larger scale is the use of crystal systems to describe crystallographic symmetry in bulk materials. There are many techniques for determining the symmetry of a given molecule, including X-ray crystallography and various forms of spectroscopy. Spectroscopic notation is based on symmetry considerations. (Wikipedia).
http://www.teachastronomy.com/ A lot of fundamental concepts in physics are based on the idea of symmetry. Symmetry is familiar to us in an aesthetic sense. It often means things that have pleasing proportion, or look the same from every direction, or have a harmonious nature about them.
From playlist 23. The Big Bang, Inflation, and General Cosmology 2
This video was produced by Nina Qiu of Year 10 (2015).
From playlist Random
Molecular dynamics with pentagonal symmetry, a representation with atomic bonds
Like the simulation https://youtu.be/absx0JHkUn8 this video shows the motion of particles coupled to a thermostat, and interacting with an anisotropic Lennard-Jones type potential with pentagonal symmetry. Here the lattice is visualized by drawing line segments between particles that are c
From playlist Molecular dynamics
The Predictive Power Of Symmetry
From a bee’s hexagonal honeycomb to the elliptical paths of planets, symmetry has long been recognized as a vital quality of nature. Einstein saw symmetry hidden in the fabric of space and time. The brilliant Emmy Noether proved that symmetry is the mathematical flower of deeply rooted phy
From playlist Science Shorts and Explainers
An attempt at growing a quasicrystal
Like the simulation https://youtu.be/YjerTwsRUp0 this one shows the motion of particles coupled to a thermostat, and interacting with an anisotropic Lennard-Jones type potential. Only this time, the potential has a pentagonal symmetry instead of a square symmetry. Two isolated particles ha
From playlist Molecular dynamics
Symmetry in Physics | Noether's theorem
▶ Topics ◀ Global / Local Symmetries, Continuous / Discrete Symmetries ▶ Social Media ◀ [Instagram] @prettymuchvideo ▶ Music ◀ TheFatRat - Fly Away feat. Anjulie https://open.spotify.com/track/1DfFHyrenAJbqsLcpRiOD9 If you want to help us get rid of ads on YouTube, you can support us on
From playlist Symmetry
Symmetries show up everywhere in physics. But what is a symmetry? While the symmetries of shapes can be interesting, a lot of times, we are more interested in symmetries of space or symmetries of spacetime. To describe these, we need to build "invariants" which give a mathematical represen
From playlist Relativity
A (somewhat) new paradigm for mathematics and physics | Diffusion Symmetry 1 | N J Wildberger
The current understanding of symmetry in mathematics and physics is through group theory. However in the last 120 years, a new strand of thought has gradually appeared in a number of disciplines, from as varied as character theory, strongly regular graphs, von Neumann algebras, Hecke algeb
From playlist Diffusion Symmetry: A bridge between mathematics and physics
Chemistry - Molecular Structure (16 of 35) Dipole Moment - Basics
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the basics of the dipole moment.
From playlist CHEMISTRY 14 MOLECULAR STRUCTURE
Molecular Orbitals of the Azide Anion (Physical Chemistry)
A way of thinking about constructing a qualitative MO diagram for the azide anion. #chemistry #physicalchemistry #physics #pchem #quantum #orbitals #electrons #symmetry ---------- When considering the molecular orbitals of a polyatomic system, it is usually easiest when there is a lot o
From playlist Random Physical Chemistry
Chemistry 107. Inorganic Chemistry. Lecture 06
UCI Chemistry: Inorganic Chemistry (Fall 2014) Lec 06. Inorganic Chemistry -- Simple MO Theory View the complete course: http://ocw.uci.edu/courses/chem_107_inorganic_chemistry.html Instructor: Matthew D. Law License: Creative Commons CC-BY-SA Terms of Use: http://ocw.uci.edu/info More co
From playlist Chem 107: Week 2
Chemistry 107. Inorganic Chemistry. Lecture 09
UCI Chemistry: Inorganic Chemistry (Fall 2014) Lec 09. Inorganic Chemistry -- MO Theory -- Part 4 View the complete course: http://ocw.uci.edu/courses/chem_107_inorganic_chemistry.html Instructor: Matthew D. Law License: Creative Commons CC-BY-SA Terms of Use: http://ocw.uci.edu/info More
From playlist Chem 107: Week 3
Lec 26 | MIT 5.112 Principles of Chemical Science, Fall 2005
Molecular Orbital Theory View the complete course: http://ocw.mit.edu/5-112F05 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 5.112 Principles of Chemical Science, Fall 2005
Molecular Structure & Statistical Mechanics 131B. Lecture 01. Symmetry and Spectroscopy Pt. 1.
UCI Chem 131B Molecular Structure & Statistical Mechanics (Winter 2013) Lec 01. Molecular Structure & Statistical Mechanics -- Symmetry and Spectroscopy -- Part 1 View the complete course: http://ocw.uci.edu/courses/chem_131b_molecular_structure_and_elementary_statistical_mechanics.html In
From playlist Chem 131B: Molecular Structure & Statistical Mechanics
Chem 131A. Lec 27. Quantum Principles: CH4 Molecular Orbitals and Delocalized Bonding
UCI Chem 131A Quantum Principles (Winter 2014) Lec 27. Quantum Principles -- CH4 Molecular Orbitals and Delocalized Bonding -- View the complete course: http://ocw.uci.edu/courses/chem_131a_quantum_principles.html Instructor: A.J. Shaka, Ph.D License: Creative Commons BY-NC-SA Terms of U
From playlist Chemistry 131A: Quantum Principles
DDPS | Machine Learning and Multi-scale Modeling
Description: Multi-scale modeling is an ambitious program that aims at unifying the different physical models at different scales for the practical purpose of developing accurate models and simulation protocols for properties of interest. Although the concept of multi-scale modeling is ver
From playlist Data-driven Physical Simulations (DDPS) Seminar Series
Molecular Structure & Statistical Mechanics 131B. Lecture 08. Molecular Motion.
UCI Chem 131B Molecular Structure & Statistical Mechanics (Winter 2013) Lec 08. Molecular Structure & Statistical Mechanics -- Molecular Motion. View the complete course: http://ocw.uci.edu/courses/chem_131b_molecular_structure_and_elementary_statistical_mechanics.html Instructor: Rachel M
From playlist Chem 131B: Week 3
Molecular Structure & Statistical Mechanics 131B. Lecture 15. Electronic Spectroscopy (Pt. IV)
UCI Chem 131B Molecular Structure & Statistical Mechanics (Winter 2013) Lec 15. Molecular Structure & Statistical Mechanics -- Electronic Spectroscopy -- Part 4. View the complete course: http://ocw.uci.edu/courses/chem_131b_molecular_structure_and_elementary_statistical_mechanics.html Ins
From playlist Chem 131B: Molecular Structure & Statistical Mechanics
Molecular Structure & Statistical Mechanics 131B. Lecture 14. Electronic Spectroscopy (Pt. III)
UCI Chem 131B Molecular Structure & Statistical Mechanics (Winter 2013) Lec 14. Molecular Structure & Statistical Mechanics -- Electronic Spectroscopy -- Part 3. View the complete course: http://ocw.uci.edu/courses/chem_131b_molecular_structure_and_elementary_statistical_mechanics.html Ins
From playlist Chem 131B: Molecular Structure & Statistical Mechanics