Spheres | Geometric measurement
Sphericity is a measure of how closely the shape of an object resembles that of a perfect sphere. For example, the sphericity of the balls inside a ball bearing determines the quality of the bearing, such as the load it can bear or the speed at which it can turn without failing. Sphericity is a specific example of a compactness measure of a shape. Defined by Wadell in 1935, the sphericity, , of a particle is the ratio of the surface area of a sphere with the same volume as the given particle to the surface area of the particle: where is volume of the particle and is the surface area of the particle. The sphericity of a sphere is unity by definition and, by the isoperimetric inequality, any particle which is not a sphere will have sphericity less than 1. Sphericity applies in three dimensions; its analogue in two dimensions, such as the cross sectional circles along a cylindrical object such as a shaft, is called roundness. (Wikipedia).
Definition of scale variable for SPSS, psychology/behavioral science & finance.
From playlist Types of Variables
Molecular Gastronomy: What is Spherification?
At the Exploratorium, Norm investigates spherification, the technique of turning any kind of food into caviar-like balls. Find out more about the Exploratorium at http://www.exploratorium.edu/ Watch more science and technology videos at http://www.tested.com
From playlist Food!
Blender Smoothed Particle Hydrodynamics (SPH) Problematic Deflections
Demonstration of a bug in Blender's particle system in combination with SPH-Fluids. http://www.kostackstudio.de
From playlist Random Blender Tests
In this video I show you how to do simple descriptive statistics, including calculating the average and standard deviation of variables.
From playlist Healthcare statistics with SPSS
Spline is an easy to use 3D design tool geared for any designer regardless of their 3D experience. It's simpler to learn than full featured 3D apps—such as Cinema 4D or Blender—because it doesn't bog you down with loads and loads of settings and features. Best of all, it is browser-based a
From playlist Web Animations
Sprouts: An awesome 2-person game
Sprouts is a paper-and-pencil game that can be enjoyed simply by both adults and children. Yet it also can be analyzed for its significant mathematical properties. Just start with three dots! Read more here: http://theothermath.com/index.php/2020/03/19/sprouts/
From playlist Games and puzzles
Chemical Reactions (4 of 11) Decomposition Reactions, An Explanation
Describes the basics of decomposition reactions, how to identify them, predict the products and balance the chemical equation. Two examples are also shown, decomposition of sugar and hydrogen peroxide. A chemical reaction is a process that leads to the chemical change of one set of chemic
From playlist Chemical Reactions and Stoichiometry
Programming & Using Splines - Part#1
Splines, in this case Catmull-Rom splines, offer a simple way to have curves in your applications. This video explores the programming to use spline paths and loops that go through all control points yielding an effective way to have more natural NPC AI behaviour. Github: https://github.c
From playlist Interesting Programming
Chemical Reactions (11 of 11) Stoichiometry: Grams to Liters of a Gas
Shows how to use stoichiometry to convert from grams of a substance to liters of a substance. A chemical reaction is a process that leads to the chemical change of one set of chemical substances to another. Chemical reactions encompass changes that only involve the positions of electrons
From playlist Chemical Reactions and Stoichiometry
Live CEOing Ep 688: Language Design in Wolfram Language [SphericalDistance, LevelMap, and More]
In this episode of Live CEOing, Stephen Wolfram discusses upcoming improvements and features to the Wolfram Language. If you'd like to contribute to the discussion in future episodes, you can participate through this YouTube channel or through the official Twitch channel of Stephen Wolfram
From playlist Behind the Scenes in Real-Life Software Design
Spherical Tensor Operators | Wigner D-Matrices | Clebsch–Gordan & Wigner–Eckart
In this video, we will explain spherical tensor operators. They are defined like this: A spherical tensor operator T^(k)_q with rank k is a collection of 2k+1 operators that are numbered by the index q, which transform under rotations in the same way as spherical harmonics do. They are als
From playlist Quantum Mechanics, Quantum Field Theory
[Lesson 26] QED Prerequisites Scattering 3: The radial wave function of a free particle
In this lesson we explore the spherical Bessel, Neuman, and Hankel functions which are all critical to our understanding of scattering theory. We will just accept the standard solutions, and explore the properties of the functions, except for the most important property: their asymptotic f
From playlist QED- Prerequisite Topics
Lec 8 | MIT 2.71 Optics, Spring 2009
Lecture 8: Telescopes; aberrations: chromatic, spherical, and coma Instructor: George Barbastathis, Colin Sheppard, Se Baek Oh View the complete course: http://ocw.mit.edu/2-71S09 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at htt
From playlist MIT 2.71 Optics, Spring 2009
Introduction to Spherical Coordinates
Introduction to Spherical Coordinates This is a full introduction to the spherical coordinate system. The definition is given and then the formulas for converting rectangular to spherical and spherical to rectangular. We also look at some of the key graphs in spherical coordinates. Final
From playlist Calculus 3
Catherine Meusburger: Turaev-Viro State sum models with defects
Talk by Catherine Meusburger in Global Noncommutative Geometry Seminar (Europe) http://www.noncommutativegeometry.nl/ncgseminar/ on March 17, 2021
From playlist Global Noncommutative Geometry Seminar (Europe)
[Lesson 9] QED Prerequisites - Mind Map of Angular Momentum Part I
This is the start of a high level review of the Quantum Theory of Angular Momentum. It is intended to point you into directions for deeper review. This material will lead us to our detailed review of non-relativistic scattering theory. Please consider supporting this channel on Patreon: h
From playlist QED- Prerequisite Topics
What is General Relativity? Lesson 72: Schwarzschild Solution - the Setup
What is General Relativity? Lesson 72: Schwarzschild Solution - the Setup In this lesson we are going to set up the mathematical problem we are solving and relate that problem to physics. In preparation for this we need to understand what a spherically symmetric metric must look like, and
From playlist What is General Relativity?
Antoine Song - Spherical Plateau problem and applications
I will discuss an area minimization problem in certain quotients of the Hilbert sphere by countable groups. An early version of that setting appears in Besson-Courtois-Gallot’s work on the entropy inequality. As an application of this minimization problem, we obtain some stability results.
From playlist Not Only Scalar Curvature Seminar
What is General Relativity? Lesson 38: Spherically Symmetric Metric
What is General Relativity? Lesson 38: Spherically Symmetric Metric We develop the form of the metric that will enforce spherical symmetry. Please consider supporting this channel via Patreon: https://www.patreon.com/XYLYXYLYX and discussing the material on the forums: https://www.pa
From playlist What is General Relativity?
ALLOTROPES - a quick definition
A quick definition of allotropes. Chem Fairy: Louise McCartney Director: Michael Harrison Written and Produced by Kimberly Hatch Harrison ♦♦♦♦♦♦♦♦♦♦ Ways to support our channel: ► Join our Patreon : https://www.patreon.com/socratica ► Make a one-time PayPal donation: https://www.payp
From playlist Chemistry glossary